By repeating this operation until the case chambers freely, you will have a reload that will give no chambering problems in the field. This may be true with small to medium capacity cases, but not magnum cases, and it doesn’t always prove true with all of the smaller cases either. Many hunters feel the 200gn bullet is the best medicine for game at long range because of the 3000fps the .338 drives it at. My .338 Whitworth Express, built on a full-length Mark X magnum action has a long throat which allows bullets to be seated so that their bases don’t extend below the case necks. barrel. Current lighter weight bullets give better terminal performance, penetration, accuracy, and flatter trajectories. However, this is largely dreaming for the 200gn bullet has far less sectional density and ballistic coefficient than the 180gn .30 caliber bullet, which does not result in either a flatter trajectory or deeper penetration. I’ve found after many years of reloading magnum cartridges, that with most bullets, and particularly the heavier weights, the best accuracy comes with loads as hot as the case will stand without causing pressure problems. Nosler’s 250gn AccuBond with its high B.C of .575 is one of the best .338 bullets made as far as long range shape is concerned. Mag. The following data was developed in a McMillan ATTENTION: New reloading data must be opened as a PDF document in an up-to-date compatible PDF viewer. Cartridge : .338 Win Mag. Refer to the current SPEER® Reloading Manual for handloading instructions. If you choose to use Reloder 19 be sure to use a standard large rifle primer instead of a magnum version. The .340 Weatherby Magnum shades the standard .338, but my .338 Whitworth Express is close to it. However, the 210 gn TSX bullet which starts out only 100fps slower than the 185 grainer has better S.D and B.C – .263 and .404 – against .231 and .379 for the 185gn MRX. Take Aim at Rifle Reloading Data. This increases the usable powder space boosting the .338’s performance, and has it treading close to the .340 Weatherby. Boosted out at 2850fps, and sighted in for a 225m zero, the SST lands 75mm high at 100m, is still 36mm high at 200, drops 176mm low at 300 and 584mm at 400. Velocities fall off dramatically when real slow burners are used, but with the heaviest bullets available in .338 – the 300gn AccuBond and Woodleigh’s 300gn RNSN or FMJ – AR2213sc and Supreme 780 work just fine. In recent years the .338 Win. Leupold bases and rings. If a hunter feels that he is better off starting a 180gn bullet like the AccuBond at around 2700fps for a specific hunting condition, then in my opinion, it would be better loaded in a .338-06 case instead of the .338 Magnum. on large and dangerous game. The following data was developed by my friend F.R. All groups are 3 shots at 100 yards. Mag. Heading to Colorado this fall and starting to develop a load for my 338 win mag, always ran the 225 gr accubond; they've pounded black bear and mule deer, but started looking into the 210 gr Barnes ttsx and the 230gr Hornady eld-x, the accubond had acceptable accuracy but wasn't "great" 1.25-1.5". L6: 3.340 inch = 84.84 mm Barrel Length : 25.0 inch = 635.0 mm Powder : Alliant Reloder-26 ? Both give high velocity and the good accuracy. This extreme B.C coupled with the high S.D of .313 gives it a retained energy of 2353 ft/lb at 400 meters. Although Re-19 trumped AR2209 with 225gn bullets, the order was reversed with the 250 grainers. Today Winchester offers four different loads for the .338 – three with 200gn bullets – a 200gn Power Max Bonded, a 200gn Ballistic Silvertip and a 200gn Power Point – all with a muzzle velocity of 2960fps; and a 225gn ABCT at 2800fps. For one thing .338 bullets have better sectional densities than those of the same weight in .358" diameter. Can you tell me if this rifle can be loaded down for use on smaller species of deer up to, say, red stag? Most work very well on thin-skinned medium-size game like deer, but lack enough penetration for large, heavy-boned game. In the Winchester brass I am using, it was impossible to get in large enough charges of bulky slow-burning powders to equal the velocities gained with AR2209 and Re-19. Remaining energy at 400 is 2239 ft/lb. The Hornady 225gn SST holds together well at 300 meters or more, but at closer ranges it is likely to break apart on big animals if heavy bone is encountered. This trio of powerful cartridges doesn’t seem to have aroused much interest, probably because they kick like a team of mules! If you're unsure, or just want options, check as many boxes as you'd like. The following were developed in is an accurate cartridge, shown by this group fired with Swift 225-gr. *Most Accurate Load C Compressed Load 2 185-grain TSX BT Sectional Density .231 Ballistic Coefficient .352 C.O.A.L 3.310” 160-grain TTSX FB Sectional Density .200 Ballistic Coefficient .342 C.O.A.L 3.340” New primed cases weighed 239.8 grains and held 76 grains of water filled to the base of the neck. The .338 Magnum is no exception to the rule. Then select your bullet weight, powder manufacturer and powder type. A-Frame bullets. We’re just starting to shoot a new build in 338 Win Mag. It is generally assumed that if the powder charge is dropped a few grains below maximum, accuracy will be greatly improved. Two of the best current 200-grain loadings are Winchester’s Power Max Bonded and Federal’s economically priced Power-Shok. We deliver Australia wide. has received a lot of competition from other .338 calibre cartridges. 180-200gr. If I were obliged to choose just one powder for the .338 it would be AR2209 or Re-19. 338 Winchester Magnum Suggested Bullet Use Suggested Bullet Use Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. But the 210gn’s major advantage is that it does not blow up at any range even from striking heavy bones at short range. But none are anywhere near the equal of the .338 Win. We used Winchester Powders include Accurate, Winchester, Ramshot, Alliant, Norma, IMR, Hodgdon, Vihtavuori My old pal Elmer Keith never considered anything lighter than 250gn in his .33 caliber rifles for game at any distance, but much-preferred heavy 275 and 300gn bullets. Dakota Deluxe safari Grade with Reducing loads and velocities in large capacity cases is not always successful with regard to accuracy. Mag.was gained with my first rifle, a Ruger Number One with 650mm barrel, which I used very successfully on deer and buffalo. rifle. Reloading the strong case is straightforward. You can also click on the image and a pdf version will open in a new window. a Kimber Model 89 rifle with a 24” barrel. Reloading Information. Be thoroughly familiar with those instructions before using these loads. The kinetic striking energy of the 250gn AccuBond from the .338 Magnum is about 25 percent greater than the .30-06 and about the same as the .300 Win. The Barnes 185gn MRX which starts out 300 fps faster, follows substantially the same trajectory path out to 300m, but drops 50mm less than the 210 grainer at 400 and delivers 93 ft/lb more energy. In rifles weighing 9-pounds, the 225-grain 338 Win. .338 Winchester Magnum The .338 Winchester Magnum put the .338 bore on everybody’s radar screen. a Winchester Pre-64 Model 70, with a 25” barrel, Back to Main Page The most suitable powders for reloading the .338 Winchester Magnum are the medium slow burners such as IMR4350 and ADI 2209 (H4350). Bullets are my favorite in the .338, with 200gr. While 250gn may be the optimum weight for shooting big, heavy game at ranges up to 250 meters or so, I prefer a stoutly structured 225gn bullet with a spritzer shape for all around use. The .338-06 probably has more thump than the .30-06 and may be a capable deer rifle, but the improved .338-06 (8.5x63mm) does little more, than the .338 RCM (Ruger Compact Magnum). The .338 Win. That placed the new Magnum directly between the .375 H&H and the .300 Weatherby. Contact Capital Cartridge for all of your 338 Winchester Magnum brass needs. Used to have an older style Win 70 in .338 (jeweled bolt style) which I ended up cracking the stock on. After sizing with the die turned down in the press so that it clears the shell holder by about 7mm, try the resized case in the rifle it will be used in. The 180-grain 300 Win. We sell a large range of reloading dies for most calibres. charge weight in grams and grains as well as muzzle velocity in meters and feet per second. The following were developed in First loads were with IMR 4350. The advanced powder is specifically formulated for the long-range .338 Lapua, although it is also ideal for a range of large magnum rifle cartridges. Buy online or visit our shop only 20 mins from Toowoomba Queensland. Copyright © 2014 The Outdoors Guide | About | Privacy Policy The 1960 Winchester catalog lists two .338 Win. Q: I am interested in purchasing a .338 Win. a 23” barrel. Sighted in 70mm high at 100 meters for a 225m zero, the 210gn TSX FB bullet drops 620mm out at 400, and packs 1822 ft/lb of energy. A loss of only 70 foot-seconds is not going to make enough difference in drop to be noticeable in the field. It’s a good choice for synthetic-stocked and laminated, stainless steel bolt-action rifles like the Ruger M77 Hawkeye, Remington Model 700, Browning’s X-Bolt and A-Bolt and the Winchester Model 70 Extreme Weather. As to why they chose .338 instead of .358 is easy to answer. Haven't played with it much. And of course, always run every reloaded round through the magazine and chamber of your rifle before you take it hunting. But Winchester was probably influenced to a great extent by Elmer Keith’s writing about the effectiveness of his .333 OKH Belted wildcat. Most of the bullets in .338 are better suited for the speeds of the 338 Winchester Magnum, 338-06, or 338 Federal and may fragment if pushed by the 338 Lapua Magnum and impact game at close range. Mag… Find what you need in four easy steps. This … Mag. load table. Then in 1961, a third loading with a 300gn round-nose Power-Point bullet at a listed 2450fps was added. Find your max charge weight for that particular powder and load all your cases at about 2% under your max charge weight. For whatever reason, muzzle velocities were later reduced to 2960, 2660 and 2430fps respectively albeit from a 600mm barrel. I’ve found that powders with medium slow burning rates such as AR2209, Re-19, and W-760 work well with bullets weighing from 180gn to 250gn giving the highest velocities and best accuracy. I'll even go to .130" off the lands if the bullet/powder will allow. The .338-06 probably has more thump than the .30-06 and may be a capable deer rifle, but the improved .338-06 (8.5x63mm) does little more, than the .338 RCM (Ruger Compact Magnum). Bullet selection in .338 covers everything from deer to dangerous game making it a versatile choice for the one-gun man, if such an individual really exists. Most of my experience with the .338 Win. Rl17 is working very well in my 338 win mag with the new bullets. Maximum chamber pressure was listed as being 53,000 psi. Federal loads an ‘180gn’ AccuBond at 3120fps; a 210gn Partition at 2830; a 225gn Barnes Triple Shock at 2800; a 225gn Trophy Bonded Bear Claw at 2730; and a 250gn Partition at 2660fps. Predicted data by increasing and decreasing the given charge, incremented in steps of 1.0% of nominal charge. This method should also help to extend case life. It can be driven at up to 2780fps with a max’ charge of AR22113sc, but this may be too hot in some rifles, so I’d recommend using 2 grains less powder. Water capacity in a normal .338 rifle with standard length action and chamber, is an indicator of how much powder you can use behind bullets of different weights and lengths. Open up the load data page you wish to download. In the 58 years since its introduction, the .338 Winchester Magnum has become a standard for North American big game. The 225gn bullet is the weight I mostly use in my own long-throated .338 Whitworth Express, which gets both Hornady and Barnes-X out at over 2900fps with a heavier charge of Re-19 than would be safe in a standard .338 throat. No amount of resizing, however, will cure a neck that’s too long for the chamber. That's why Alliant Powder® put countless hours of research and development into creating Reloder® 33. It had a 24” Donnelly 338 Winchester Magnum The following data was developed in a … reloaders: bullet diameter .338", primer size Large Rifle Magnum, maximum COL 3.34", maximum case length 2.50", MAP 54,000 cup. with 180gn bullet, but having 20 percent greater cross-sectional area and 70 grains greater bullet weight contributes materially to the superiority of the .338. Measuring water capacity of more than half a dozen cases from major U.S makers, weight ranged from 73.8 to 78.6 grains. I have a Win M70 CRF Alaskan in .338WM. Pick a powder. Differences in brass thickness and case capacity vary from one maker to the next, and even in different lots from the same maker. 338-06 A-Square 180 Grain; Load/Test 5 shots each, at each seating depth of .010", .040", .070" and .100" off the lands. This makes it necessary to vary loads a little when changing brass, but doesn’t affect me, as I use only Winchester brass. This was load was worked up from a starting load of 65 grains and has not shown any pressure signs in 5 different rifles. The .340 Weatherby started out in life as an experimental cartridge made by necking down the 378 Weatherby to .338 with no other change. Sighted 76mm high at 100m it is 44mm high at 200, drops 195mm at 300 and 635mm at 400. Yet its high weight retention will give extremely deep penetration for the heaviest game. being what I think the perfect .338 bullet weight. The .338 Winchester Magnum (top) compared to the .375 H&H (bottom). To equal the 250gn .338 bullets S.D of .313, a .358 bullet would have to weigh 281 grains. Powders in the 4831 range are simply too slow and heavily compressed charges fail to produce desirable velocities with bullet weights up to … Received my 1st box of the 265’s the last week of October. Winchester launched the cartridge with a choice of two bullet weights – a 200gn Power Point with a nominal muzzle velocity of 3000fps and a 250gn Silvertip at 2700fps.
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