Those who want the highest possible velocities may wish to adopt a custom rifle start with a generous barrel length (my own preference is 26 to keep the blast and noise forwards while taming recoil). With an Accu-Fit stock and left hand adjustable bolt, this rifle is a perfect choice for anyone! Fast kills could be expected out to ordinary hunting ranges of around 300 yards with room for shot placement error. I had been in Africa for some time before they arrived, and unfortunately, a left-hand version of the .375 Ruger couldn't be cobbled together before I departed. With a fairly short, trim barrel and the standard-length action the M77 in .375 Ruger is fairly light and produces stout recoil off the bench--but it isn't unmanageable, and most experienced shooters should be able to handle it. 6.5 PRC vs 6.5 RPM What You Need to Know, Remington .50-70 Rolling Block History: New York's Pick to Arm Its National Guard, 7 Top .17 HMR (Hornady Magnum Rimfire) Rifles. Although bullet construction is always the most important consideration for fast and clean killing. The BC of this bullet is very low at .270, therefore, the faster it can be driven the better in order to ensure high impact velocities. Ken, Steve and Wayne could handle it. A heavy bullet can afford to shed some weight and mass (energy transfer) as a means to promote trauma. If you do not truly love shooting these big guns and challenging yourself dont put animals through your ignorance. How the .375 Ruger is capable of taking the largest game: Slightly greater capacity than the .375 H&H Magnum. Strong, simple, compact falling-block breech mechanism with artillery-style breechblock and under-lever is ideally suited for today's powerful cartridges. Initially, the two Ruger M77 rifles designed for the .375 Ruger were the Hawkeye African and Hawkeye Alaskan. Without due protection the Ruger brake can cause immediate hearing damage and a temporary loss of sight should gases blow back into ones eyes from the short barrel. This is not damning with faint praise, not at all. The .375 Ruger uses a unique cartridge case designed by Hornady and Ruger. TDCC (Tables of Dimensions of Cartridges and Chambers) 300 PRC", ".300 PRC Review: Everything You Need to Know", "Hornady Ruger Compact Magnum Cartridge Review", C.I.P. As always, but especially when using solid bullets, shot placement is the key. Between 2200 and 1800fps shot placement is the key on lean game. Hornady on the other hand, have placed some focus on smooth feeding. The company is introducing the .375 Ruger in two configurations under the M77 "Hawkeye" name: a wooden-stock, 23-inch-barrel model called the M77 Hawkeye "African" and a Jim Hogue synthetic-stock, 20-inch-barrel version, which will be known as the "Alaskan.". This bull took the bullet, tried to turn, fell over and didn't get back up. Additionally, the .375 Ruger yields around 6% greater case capacity than the .375 H&H. Wounding is severe however if used in this manner. The Hornady Superformance ammunition drives a 270-grain (17g) SP-RP bullet at 2,840ft/s (870m/s) and the 300-grain (19g) DGS and DGX bullets at 2,660ft/s (810m/s). The .375 Ruger is a rimless cartridge often used for hunting large and dangerous game. There are certainly many rave reviews of this projectile to be found in gun rag write ups and online articles. Both feature near double thickness jackets compared to the smaller bore Sierra bullets and both feature tougher cores. This projectile can tackle heavy game, but here is where we can also run into trouble. This means you have the option to read your magazine on most popular phones and tablets. That said, hand loaders must be careful not to make general assumptions based on any published data as there is a great deal of variation in bullet shape and jacket thickness in the medium bores, especially with regards to premium bullets. Features an engraved Ruger logo and patented latch that is flush with the trigger guard to avoid accidental dumping of cartridges. Regarding the solid bullet designs: these are most useful for CNS shooting. The Barnes bullets do not suffer over-expansion. This projectile is in essence designed to be used for taking CNS shots on the heaviest of game. On medium weight game from a muzzle velocity of 2740fps in the 20 barreled Alaskan the 270 Interlock produces very fast kills out to around 235 yards or 2200fps, the longer barreled African at 2815fps gains a negligible 25 yards. The advent and acceptance of .404" beltless magnums such as the .375 RUM inspired Ruger to develop a potent magnum without having to alter their inexpensive cast action design. Between 2200 and 2000fps (280 yards), killing is clean but can be somewhat delayed. Any human or rifle error will invariably result in slow killing. It was designed as a dangerous game cartridge, particularly for use in Alaska and Africa. Give a Gift Currently, Hornady and Double Tap manufacture ammunition for the .375 Ruger cartridge. Semi-automatic and striker-fired, the P320-XTEN is extremely accurate, easy to shoot even with powerful 10mm loads and holds 15-plus-one rounds. The reason I abandoned Wayne Holt and Ken Jorgensen in the wilds of Mozambique was because I had a short turnaround before a long-awaited safari in Tanzania. The faster it can be driven the better its performance as a lighter medium game bullet, utilizing impact velocity to increase target resistance and therefore help overcome its bonding. Subscriber Services. This projectile is also too long to be housed in the Ruger M77. Listed as discontinued. If the hunter can visualize both the point of the shoulder and forwards portion of the lungs and work the angles according to the situation this will increase the ability of the bullet (any bullet) to produce a fast kill. This combined with very select shot placement, keeping shots well forwards on the shoulder, can allow us to drop very large animals in their tracks. Unlike Remington Ultra Magnum cartridges, the Ruger Magnums can be chambered in standard-length bolt-action rifles. Hornady currently produce four Superformance loads for the .375 Ruger: the 250 grain GMX (homogenous copper bullet) at 2900fps, the 270 grain SP-RP Interlock at 2840fps, the 300 grain Dangerous Game Expanding (DGX) at 2660fps and the 300 grain steel jacketed Dangerous Game Solid (DGS) also at 2660fps. During the course of nearly three weeks he took more than a dozen animals from impala to Cape buffalo in size with the .375 Ruger, and he managed to use all three of Hornady's loads for the new cartridge: 270-grain Interlock spirepoint, 300-grain InterBond roundnose and 300-grain FMJ roundnose. As a researcher, I tend to look for the poleax effect as this subject interests me as a matter of research. This allows the cartridge to have a greater case capacity than a belted magnum case given cases of equal length. Anything anybody thought they needed in a .375 cartridge was done by Roy Weatherby, not once but twice (.375 and .378 Weatherby Magnums)--and again by Remington in 2000 with the .375 RUM. Scott Rupp gets a chance to talk to Aaron Oelger about a few new products from Hodgdon and why reloading store shelves are empty. The .300 Ruger Compact Magnum or .300 RCM was designed in 2007 and uses a case designed by Hornady and Ruger based on the .375 Ruger cartridge. What It Is Not. The .375 Ruger cartridge and Ruger Hawkeye African bolt rifle are not flashes in the pan, but the author thought they could stand a little improvement. But, it eventually rose to the top, and not just among African hunters. This is the primary consideration. The Dakota, Ruger and Nosler cartridges are essentially wider versions of the basic 2.5 belted magnums (.264 Win Mag, 7mm Rem Mag, .338 Win Mag). Non-rotating, Mauser-type controlled round feed extractor is among the most positive case extraction systems ever invented, and features a fixed blade-type ejector that positively ejects empty cases as the bolt is moved fully rearward. It is also worth noting that Hornadys Superformance loads for the .375 H&H almost duplicate the .375 Ruger loadings, though without the same level of efficiency. With various loads running between 2600 and 2800fps, the Ruger packed plenty of punch for large North American game. Again, getting close with an accurate rifle is the key. We got on that herd in late afternoon, with very little time for finesse. The .375 Ruger is actually capable of generating higher velocities than the H&H, by roughly 100 fps in a 24-inch barrel. The Weldcore bullet really comes into its own when the going gets tough, an emphatic killer of large and tough bodied deer and Antelope when used out to ordinary hunting ranges. Will the 375 Ruger remain a commercially available rifle/round? A superior stock forend design would help a great deal to aid to recoil reduction and allow many users to do away with the brake altogether. This is where the 350 grain bullets can come into their own; the round nose where a wide range of game weights may be encountered and the stouter protected point for dedicated heavy game hunting. Throughout most of Africa it is the accepted minimum for thick-skinned dangerous game, and it is also a world standard in terms of versatility. The Outfitter load features a 250-grain GMX (a lead-free choice), at a muzzle velocity of 2800 fps and will give a trajectory much like a .308 Winchester with a 180-grain bullet; with a 200-yard zero, itll strike eight inches low at 300 yards and 23 inches low at 400 yards. Hinterland #: 78027. The cartridge is based on the .375 Ruger case, which was necked up to accept a .416in (10.6mm) bullet. There have been many cartridges designed to compete or replace the .375 H&H, including the .375 Weatherby Magnum and its larger brother the .378 Weatherby Magnum, the .375 Dakota, the .376 Steyr and the .375 Remington Ultra Magnum; while all of them have a following, none have approached the flowing of the H&H design. All RifleShooter subscribers now have digital access to their magazine content. Mossberg & Sons produced bolt-action rifles of the "Patriot" series chambered in .375 Ruger with different stock options. Those who wish to hunt light framed game at bush / woods ranges or in semi open country, where shots are not long, may wish to consider using the 200 Grain Sierra flat point bullet (BC .200) designed for the .375 Winchester. The 250 grain Swift A-Frame is, in the most basic sense, a bonded version of the Partition bullet. The 350 grain Woodleigh round nose and protected point bullets come into their own on the heaviest of game where they are able to shed some weight and SD but continue to produce vivid wounding to a much deeper level than their 300 grain counterparts which can, if pushed too hard, suffer over-expansion. [11] This round is designed for hunting medium- to large-sized North American game. But for someone who wants a no-nonsense cartridge in an affordable rifle, the .375 Ruger in the Hawkeye rifle makes a great choice. The 260 grain Partition is very useful for hunting game weighing up to 450kg (1000lb). Tho with good case prep, Hornady brass will bring very good accuracy. One of my clients showed up to hunt buffalo, sable plains game etc. This bullet is most spectacular at impact velocities above 2400fps but displays vivid performance down to 2200fps. Savage Arms 110 Bear Hunter Rifle | 57047 375 Ruger, 23" Stainless BBL, Bolt Action, AccuFit MOBUC Camo Stock, Matte Stainless Finish, Adj Muzzle Brake, 2+1 Rds. Loaded to a muzzle velocity of 2800fps the 270 grain Speer (BC .430) breaks 1800fps at around 520 yards. Few others offer such a wide level of wounding. But in cases where the design of the rifle simply produces intolerable recoil (as many do), one may simply have to lose 100fps or utilize a brake. The WSM's and RCM's seem to have fallen behind. The following will focus on a smaller number of select bullet designs of interest, organized by bullet weight rather than brand. But understand this: if you cannot test shoot this rifle without using a lead sled, do not expect to miraculously become Matthew Quigley in the field without it. The .416 Ruger is a beltless, rimless, bottle-necked cartridge designed as a joint venture by Hornady and Ruger in 2008. I must say that Steve did some very good work with this rifle and cartridge. This is no surprise; accuracy in any factory rifle is going to vary, and I saw the normal variance from good enough to very, very good. As Ken had promised, when I got home there was a long Ruger box awaiting me, and in it was the very first left-hand Ruger M77 in .375 Ruger. Handloading for the .375 Ruger is a straightforward affair; look to a large rifle magnum primer and powders like Reloder 15, 16 and 17, H380, VARGET and IMR4064, IMR4166, IMR4350 and IMR4451, depending on the bullet your loading. The .375 Ruger has passed the test of time for me in all aspects and I do believe it's popularity will increase as other manufactures add models chambered for it. This bullet can be driven fast (though the 1:12 twist rate can limit accuracy above 2950fps), or utilized as a mild load using reloading book data for the 300 grain bullet weight resulting in muzzle velocities of around 2600fps. Zeroing off the bench with the Mossberg Patriot in 375 Ruger. Home Forums Hunting & Shooting Ask The Gunwriters Mossberg Patriot in 375 Ruger discontinued? Since it is a rimless, unbelted case that doesn't "step down" in front of the belt, it is thus a fatter case than the .375. By the same token, be wary of high weight retention projectiles that supposedly dump vast amounts of energy yet then defy physics by maintaining their form and weight. Like the .376 Steyr that originates from the 9.364mm Brenneke and the .375 Dakota proprietary cartridge that originates from the .404 Jeffery, the .375 Ruger was designed to compete with the .375 H&H Magnum, yet have the advantage of having a rimless, beltless case and can function through a standard-length bolt-action rifle due to a shorter overall length. In the Remington Ultra Magnum for example, the heavier weight and higher velocity can result in higher over all trauma or what we might call stopping power regardless of the misunderstandings within this subject. A safe minimum impact velocity for this bullet is 1800fps or around 430 to 450 yards. Shot the factory 300gr. For those who wish to build or re-build a .375 Ruger: a basic 24" or 26 barrel rifle of sufficient heft mated to a straight line stock with a generously wide forend is the key to easy shooting. Do however keep in mind that the BC for this bullet is low (.380) therefore wind drift is a concern. Beyond 280 yards, shot placement is extremely important (forwards shoulder) to help ensure full expansion, the Partition reaching the end of the line at 1800fps or around 360 yards. It is designed to provide an increase in performance over the .375 H&H cartridge, yet to be chambered in a standard-length action rifle. It is for these reasons that as much as I like the Swift and Woodleigh medium weight bullets, I do not see them as being ideal for heavy game. Learn how and when to remove this template message, "American Rifleman | Editors' PicksNew for 2015: Mossberg Patriot", "Mossberg Patriot | O.F. Two useful medium weight copper pills include the 250 grain Barnes TTSX and the 250 grain Hornady GMX, both producing similar performance. In rifles which yield full velocities of 2850fps, the 260 grain Partition breaks 2200fps at around 235 yards and 1800fps at around 400 yards. As an aside, this is a very good bullet weight with regards to the actual construction of this bullet. By Greg Rodriguez. But there are some animals which are just so large and tough that unless we were to use a Chey-Tac, or perhaps a .50 BMG, there is simply no way they are going to go straight down with ordinary body shots and there is no point chasing maximum velocities. The case ends at 21?2 inches--.30 inch shorter than the .375 H&H--but since it's a bit fatter and has no taper before the shoulder, it slightly exceeds the .375 H&H in powder capacity. It truly mirrors the velocities of the H&H case in a cartridge housed in a standard long action (versus the magnum action needed for the H&H), in a beltless, rimless design. Combine this with the difficulties of longer range follow up shots and well, the reader should see the obvious here. The premiums can be divided into those that are relatively soft in nature versus those which are truly tough. Anyone who has used Russian made steel jacketed soft point ammunition (often found in .223 and .308) will have at least some experience of how such ammunition can perform. It remained cloaked in secrecy for some time, but so what? Good luck with Dorian on Monday. By the same token wind drift is a major concern and to this end, the 2600fps load really is best used at close ranges. Following the introduction of the .375 Ruger, many shooters expected a whole family of Ruger magnum cartridges but these never eventuated, perhaps due to the fact that the Ruger magazine was still not all that well suited to the now very long Hornady bullets. Personally, I don't give much of a hoot about the extra velocity. The more streamlined the bullet the lower the energy transfer. New CZ, Ruger Hawkeye, Remington, Savage, and some other moderate cost dangerous game rifles can be purchased for less than $1,000. Though it wasnt the firstand it certainly isnt the lastthe .375 Holland & Holland Belted Magnum set the standard for not only the proper velocities, but the desired terminal ballistics for the .375-inch diameter. Of the conventional medium to heavy weight bullet designs the 250 and 300 grain Sierra Gameking bullets can prove immensely useful. Certainly, they were good enough to go hunting with, and that's exactly what we did. As for the buffalo, it was an epic adventure. Looking at the case volume, in spite of being .270 inches shorter than the .375 H&H Magnum, the .375 Ruger actually has a greater volume; about 4 percent, depending on case brand. Buy Discontinued Hornady 375 bullets 225 grain : GunBroker is the largest seller of Reloading Supplies Ammunition Reloading All: 973482523 . I have run .375 Ruger ammo through such actions and so far it has fed great every time. With regards to long range shooting the Sierra 350 grain match bullet may seem appealing for long range work but it is not designed for killing. Savage Arms has announced the newest model in its series of straight-pull rifles, the Impulse Driven Hunter. Unfortunately, this is something that comes more naturally with time and experience. At this time of writing there are now many buzz words used to label and describe bullets that are designed to enhance hydraulic action. Readers are advised to employ extra caution when using this bullet (and the heavier Accubond) in the .375 caliber on large bodied game or better still, avoid it altogether. Game taken ranged from warthog and bushbuck on up through sable and waterbuck, then up again to buffalo and crocodile. The 235 grain Speer can be put to very good use in the Ruger. In some cases the broadside shot is not always the most suitable for this and instead it can be better to wait for a shot which places the animal lightly quartering on, allowing the bullet to strike the very center of the shoulder ball joint, after which the bullet can then pass through the forwards portion of the lungs. The .375 Ruger gives the company the opportunity, for the first time, to house this level of power, performance and versatility in the standard Ruger M77 Mk II. The 300 grain Nosler Partition is ideal for large Alaskan game out to ordinary hunting ranges. The .375 H&H provides one of the world's greatest benchmarks for performance. Copyright 2007-2017 Terminal Ballistics Research, Ballisticstudies.com, Achieve success with the long range hunting book series & matchgrade bedding products, MatchGrade Synthetic Stock Stabilizer instructions, The Practical Guide to Long Range Hunting Rifles, The Practical Guide to Bolt Action Rifle Accurizing & Maintenance, The Practical Guide to Long Range Hunting Cartridges, The Practical Guide To Long Range Shooting. The Remington Model Seven is ready, willing and able to handle just about any task. The key here is to put aside notions of extremely fast kills. Now, as I set about releasing my research, Hornady have finally adopted core bonding. As with most things in life, what you see depends on where you sit. Hornady would do well to bring this bullet back or offer an SST or ELD-X alternative. It was early in the year when I heard the first rumor about a "new .375 cartridge." When I do, things are pretty serious. with a new .375 Ruger Hawkeye. Only problem is that you are limited to only Hornady brass. This projectile really comes into its own when used at extended ranges on game weighing over 150kg (330lb), though it works well on lighter body weights at close to moderate ranges. All of these subjects (including Ruger accurizing) are covered in great detail within my book series. The .375 Ruger (9.565.5mm) is a rimless, standard-length rifle cartridge designed for the hunting of large, dangerous game. In 2006, Ruger and Hornady introduced the .375 Ruger with a 2.58-inch case and the Holland's .532-inch rim, but it had no belt, headspacing instead on a 30-degree shoulder a fetching design. By using a very basic lead core bullet with a partially flat nose, the cartridge OAL is kept short and without cramping powder space, while at the same time ammunition will generally feed smoothly from a box magazine. One simply cannot overlook these factors. I haven't shot the 260/270gr. The 270 Interlock Recoil Proof Interlock bullet featured in the .375 Ruger loading is a slightly modified version of the traditional Interlock. Their capabilities remain essentially comparable. Hornady 's new Superformance loads produce a bit more velocity, and the rifle refinements made by Hill Country Rifle make it more accurate and user-friendly. From a muzzle velocity of 2950fps the Sierra kills with style out to ranges of around 170 yards (2200fps), thereafter producing clean but sometimes delayed kills out to 270 yards (1800fps). A new wrinkle on the Ruger M77 in .375 Ruger is this sturdy, visible fixed-blade rear sight, a vast improvement over the folding-leaf sight long supplied on the M77 Mk II. Ruger have cut down the barrel lengths of their rifles so that they are not overly long (no longer than a regular 26 barreled magnum) or cumbersome when fitted with muzzle brakes. The cartridge was designed in partnership, by Hornady and Ruger. Based purely on case capacity, a fairly straight .532-inch-diameter case with a fairly sharp shoulder should do this, and it does. In 2007, it was released commercially and chambered in the Ruger Hawkeye African and the Ruger Hawkeye Alaskan rifles.[2]. It is designed to provide an increase in performance over the .375 H&H cartridge, yet to be chambered in a standard-length action rifle. Readers are advised to experiment utilizing this as a part of a dual load (premium bullet for close ranges / Speer BTSP out long) when tackling large body weights. bullets with express sights and hitting a 12"x12" steel gong at 100yds. The .375 Ruger was introduced in 2007 as a rimless standard length cartridge that is slightly larger in powder capacity and energy than the .375 H & H Magnum (a belted and tapered cartridge) , widely used in Africa all the way up to Elephant. Hornady loads their 250gr GMX, 270gr SP-RP, and 300gr DGX/DGS bullets to advertised velocities of 2,900fps, 2,840fps, and 2,660fps respectively (using a 24 barrel). Further to this, do not be quick to blame poor accuracy as being the result of a hot load. It is both forgiving and can be more humane than the small bores in bush hunting situations as poor shots taken with the .375 generally slow game down fast, allowing quick follow up shots. Online pricing may vary from in-store pricing. Near enough is not good enough, practice, stalk well, wait, pick your angles, and break bone. If used in this manner the hunter must attempt to break heavy bone while also trying to angle shots through the autonomic plexus (see Game Killing section). As I understand it, one of the goals for the 375 Ruger cartridge was to equal the performance of a 375 H&H out of a 24" barrel, but to do it with a 20" barrel. The bull had been bedded during the stalk, but just as we got in range and got set, he got up and faced me. The title of the series may be Long Range, but the subject matter is highly pertinent to finding one's mojo with the medium bores whether used in close or out long. We're going to a new area, and I have no idea exactly what we'll find, but I'm certain the .375 Ruger will be up to the challenge--just as certain as I am that Hornady and Ruger have a winner of a .375 cartridge, a cartridge that may well redefine, for the first time since 1912, our concept of the world's best all-around cartridge. In 24-inch test barrels, the .375 Ruger sent 270-grain bullets at 2,840 fps and 300s at 2,660, trumping the .375 H&H by more than 100 fps. The Ruger Muzzle Brake System includes a removable, radial-port muzzle brake that significantly reduces felt recoil. Both these cartridges were designed to fit standard length long actions. It has been used to take roe deer, reindeer, ibex, and more. New 375 RUM Remington rifles sales must going south. Yeah, I probably look like I'm thinking, "This is gonna hurt." It was designed by brothers James Tow and Keith Tow of Halsey, Oregon, to provide comparable performance to traditional African stopping rifles from the context of the Magnum Research BFR revolvers. In other words, and for the most part, large bodied deer and antelope weighing up to and around 600kg (1300lb), a very reasonable assessment. Ruger's straight stock design helps considerably, but you must also take into account the fact that, with a shorter barrel and a lighter (smaller equals lighter) action, most .375 Ruger rifles will be lighter than most .375 H&H rifles. To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine. Sable are extremely tough, and this bull was in a big herd. Mossberg Patriot .375 Ruger JakeH Jun 7, 2018 1 2 Next JakeH AH enthusiast Joined Jul 22, 2017 Messages 405 Reaction score 522 Location North Carolina Media 2 Hunting reports Africa 1 Member of NRA Hunted USA Jun 7, 2018 #1 Does anybody here have any firsthand experience with the Mossberg Patriot in .375 Ruger? Left-hand models--good news for me, of course--will be available by mid-2007. Instead, the DGS seeks to find a compromise between terminal performance and smooth feeding from the Ruger action. As Ruger intended the cartridge to be chambered in standard-length bolt-action rifles,[2] the case length was kept to 2.580in (65.5mm), which is only .04in (1.0mm) longer than the .270 Winchester case. The steel of the Alaskan was chrome moly rather than stainless steel as one might expect on an all weather rifle. As with most medium bores the .375 Ruger produces best results across all bullet weights with powders in the IMR / H 4350 range, though the faster Varget burn rate can work very well with light weight bullets. Any .375 cartridge must first be judged against the H&H. Wayne Holt checking zero on his synthetic-stocked Ruger M77 Mk II in .375 Ruger. This can lead to disastrous results on large, heavy bodied animals. Therefore to say that the Sierra can expand at 1600fps only relays a part of the picture, especially when its expansion is both limited and very much reliant on some degree of resistance (shoulder muscles and bone) in order to be at least partially effective. While the Hornady bullets are excellent, handloading for the .375 Ruger will open the floodgates of possibilities. For more information on this subject please read The Practical Guide To Long Range Hunting Cartridges. Nosler, as an example, show loads yielding 2880fps with their 260 grain bullets but these velocities were taken in a 26 barrel. Similar to the design ideas for the WSM cartridge family, but somewhat narrower which will frequently allow one more cartridge in the rifle magazine than the WSM equivalent. Apart from this the Sierra has great merit. Those hunting the wilds of India, Australia, Canada and the United States all were well-served by the .375 H&H. This was a walnut-stocked rifle, 23-inch barrel, good iron sights. Joined: Feb 2001. To aim behind the shoulder simply underutilizes these bullet designs - a bonded soft point bullet would have been entirely adequate for this. The recommended rate of twist is one revolution in 12in (304.8mm). There are no shortcomings in the 375 Ruger case design. I doubt it; there are just too many great rifles chambered for the H&H, too many ammunition choices, as well as too many devotees of the old, belted case. It's OK, but, after all, the .375 H&H has been adequate since 1912, so I don't think that is what is most important about the new cartridge. It's not the worst, but not near the best either. I'm leaving in just a few days, and that left-hand .375 Ruger is already in my gun case, with both solids and softs in my bulging duffel bag. Those who wish to experiment with it for hunting will need to utilize either a custom action with a generous length magazine box or be prepared to single feed loads into the M77 action. At 2600fps this is a very hard hitting load and fast killing out to ranges of around 90 to 100 yards, producing clean but sometimes delayed killing down to impact velocities of around 1800fps or 200 yards. It uses a .532-inch rim diameter (the same as the .375 H&H and its subsequent offspring) which I assume would make it financially beneficial to machine the rifles bolt, and a rimless design with very little body taper. Barrel Break-In: What It Is. Will it ever unseat the .375 H&H Magnum as the king of the .375s? Mossberg & Sons", SAAMI Drawing 300 Precision Rifle Cartridge (300 PRC), "It's Official SAAMI Approves Hornady 6.5 PRC and 300 PRC", "C.I.P. Well, no hurry; this new wonder boy will come along in due time, and I'll have to grit my teeth and write about it.