best powder for 338 win mag

The .338 Winchester Magnum is the most popular medium bore cartridge in North America and the only one for which a truly wide range of rifles is available. The Contestants. Among those often recommended are H414, H4350, IMR 4350, IMR 4831 and RL-19. H4831 with a 225 partition gives me 2950fps and 1 inch MOA. My question is, what do you people seem to think about powder and primer. The most suitable powders for reloading the .338 Winchester Magnum are the medium slow burners such as IMR4350 and ADI 2209 (H4350). Winchester introduced the .338 in a Model 70 rifle named the "Alaskan" and it has become the most popular caliber used by professional guides in that vast state. I have had very good luck with IMR 4831 or H 4350 as well. At 200 yards the velocity is 2,374 fps and the energy is 2,815 ft. lbs. 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. As for slow the 45-120-550 Sharps is a long range killer lumbering along at 1,200 FPS. ... the .308 Norma is at its best with the slower burning powders. Among those often recommended are H414, H4350, IMR 4350, IMR 4831 and RL-19. Calculations were corrected to standard temperature (59F/15C) and … While it is true that the heavier bullets will generally have higher BCs and SDs, the win mag case just does not have the powder capacity to use them as effectively. Mag. I have been having trouble getting the velocities I would like from my 338 Win Mag. It provides top performance in big game cartridges such as 25-06, 280 Remington and 300 Winchester Magnum. But for my distance (1200+) Its the 170 with 300 g berger hybrids for me, as said before there is no "Best" powder. Reloaders have all of these, plus bullets of 175, 275, and 300 grains in addition. If you already have a .300 Win Mag, there’s really not a big reason to upgrade to the 300 PRC unless you just want to. In some of their data the powder manufacturer recommends standard primers and I did some tests and found they were right. Mag. Federal's Premium Safari Rifle load pushes a 250 grain Nosler Partition spitzer bullet (BC .473, SD .313) at a MV of 2,660 fps and a ME of 3,925 ft. lbs. I use H4350. Vihtavouri 170 for my lapua,used h1000 and wasnt the happiest,the Vihtavouri 165 only produces results with my 250g and my 225g rounds. Note: The complete article about the .338 Winchester Magnum can be found in its entirety on the Rifle Cartridges page. The weights above 225 gr work best in the 338 lapua or similar. But then too, I only shoot ccup and core bullet's. It is virtually identical to the .30-338 Magnum wildcat. 225 gr Barnes TTSX barely get to 2,700 fps and the 210 gr TTSX are getting slightly over 2,800 fps. This load has a MPBR of approximately 265 yards. primers, I get better accuracy using a std. Here are some specifications of interest to .338 Win. case configuration was close to optimal from the start. If I were to go moose hunting today I'd take my 30-06. This one’s a bit of an anomaly in our bolt-centric .338 lineup. At 200 yards the velocity is 2,509 fps and the energy is 2,794 ft. lbs. The gun powder doesn’t necessarily have to be the best for all of the ammo applications, just good enough be useful. I find them more accurate. But if I were going to go 338 mag, it would definitely be with a 250gr bullet. The author analyzed six .338 caliber magnum cartridges (.338 Winchester Magnum, .340 Weatherby, .338-378 Weatherby, .338 Remington Ultra Mag., 33 Nosler, and .338 Lapua) for trajectory, effective range, and recoil with modern ballistic software available free online from shooterscalculator.com. ... we certainly recommend trying another powder, for the powder type and charge greatly affects the overall accuracy of each individual firearm. IMR 4350 drives bullets about as well as any slow-burning powder but with less propellant, and that’s handy when powder prices are high. Celebrating its 60th birthday last year, the .338 Winchester Magnum is among the original family of short magnum cartridges; that meaning the cartridge would fit in a standard, long-action rifle as opposed to a magnum-length action required by the .300 H&H Magnum and its parent, the .375 H&H Magnum. Hodgdon reloading data Rocky Mountain Reloading Nosler Load Data Alliant Load Data Powder … LoadData.com has more powder and bullet combination than any other reloading manual on the market. Mag. I've had two 338 mags in the past and they beat the tar out of me! When the .338 Win. A 225 grain Hornady bullet can be driven to a MV of 2300 fps by 58.2 grains of IMR 4831, and to a MV of 2800 fps by a maximum load of 69.8 grains of IMR 4831. case necked down to accept .308" diameter bullets. While there is a wide range bullet weights available for .338 rifles, the 200-250 grain bullets remain the most popular with shooters and reloaders. If you choose to use Reloder 19 be sure to use a standard large rifle primer instead of a magnum version. Mag. Reloaders can essentially equal the Norma factory load, and have access to many more bullet weights. Power Pro™ 4000-MR (Magnum Rifle) Smokeless spherical magnum rifle powder. reloaders: bullet diameter .338", primer size Large Rifle Magnum, maximum COL 3.34", maximum case length 2.50", MAP 54,000 cup.

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