The three commercial short .30s (WSM, RUM, RCM) do … The difference in ballistics between the WSM and RSAUM are insignificant in all practical applications. The .300 H&H Mag. The 6.5mm Rem. has been around since 1920, but its case is the same length as its parent, the .375 H&H, so it requires a magnum-length action.

Dabei beschreibt die 300 das Kaliber mit 0,3 Zoll bzw. The difference in how low the bullet sits in the casing is negligible and results in the .300 Win Mag being able to hold a greater amount of powder though the case capacity does not represent how much powder is loaded into each cartridge. [1][2] The name of the cartridge is a misnomer as the bullet diameter is .323 in (8.2 mm).

This brass has been sized from NEW Winchester 300 WSM parent case (will have 300 WSM headstamp). But I did also say that the .325 WSM would be a better option for necking a WSM cases to .338. For liability we recommend starting to load this brass with reduced charges to ensure safety. Or so goes the advertising hype.

The Sporting Arms and Ammunition Manufacturers’ Institute (SAAMI®) has accepted two new Hornady-marketed cartridges, the 6.5 Precision Rifle Cartridge (6.5 PRC) and the 300 PRC. .300 PRC vs. Other .30-Caliber Magnums Why the Hornady .300 PRC — a new .30-caliber magnum — trumps all others. Sep 28, 2010 #1 Skimbleshanks Well-Known Member . Brass has the 28 Degree shoulder - this is not the 30/25 WSSM brass.

Joined Jan 8, 2010 Messages 289 Location Willamette Vally. And the 308 is based off the 300 Savage case . Has anybody experimented or is there just too much case capacity making it very inefficient? Our 300 Blackout may seem like a very common caliber, but you’ll see our many configuration options are what set us apart.

Look closely at those 300 magnum performance numbers and you’ll realize that in Winchester’s factory loads the new 300 WSM adds just 60 fps of muzzle velocity and 143 f-p kinetic energy. The .300 WSM also head spaces off its case shoulder versus the older 300 Winchester Magnum's belted head space engineered design. Brass will need to be trimmed to final length prior to loading. .300 Win Mag.300 WSM Parent Casing.375 H&H Magnum-Bullet Diameter 0.308” 0.308” Neck Diameter 0.339” 0.344” Base Diameter 0.532” 0.555” Case Length 2.62” 2.1” Overall Length 3.34” 2.86” Case Capacity 93.8gr It is based off a .300 WSM parent case by narrowing the neck to fit a .277 inch (7mm) bullet.

You’ll have the ability to achieve the look and performance which up until now, have only been in your dreams. Notably, for both cartridges, SAAMI lists a Maximum Average Pressure (MAP) of 65,000 PSI.

50 Pieces of reformed .300 OSSM brass (300 Olympic). When it was introduced, the 300 WSM sported a new case that showed a lot of promise for uses in other calibers. The .300 WSM seems to be the favorite among all of the short magnums. The 270 WSM can produce kills on medium sized game up to 300 yards with 130 grain rounds before penetrating wound performance is noticeable. . . One Gunwerks rifle was on hand to test two Hornady factory loads. The cartridge was introduced by Winchester Ammunition in 2005.

Being a brand new cartridge, the 300 PRC has been chambered in very few rifles. What about a 338-300 WSM improved to the 7WSM body length. The ballistic performance based off four grain type velocities are 3,700 ft/s (90 gr), 3,295 ft/s (130 gr), 3,250 ft/s (140 gr), 3,136 ft/s (150 gr). 300 PRC Cartridge Testing. This short, fat case is supposed to match the ballistics of the old, long 300 Win. Rifle Cartridge Parent Cases, a table by Adam Gubar. For ELR (extra long range) work, Hornady’s new .300 PRC cartridge (left) has an advantage over every popular 30-caliber magnum currently on the market. The 300 RSAUM's ballistics are similar to 300 Win Mag and 300 WSM.

More of a “fun shoot” than an intense evaluation, actual data collection was not possible. I engaged steel targets out to 1,100 yards and was able to make hits. August 13th, 2018 It’s Official — SAAMI Approves Hornady 6.5 PRC and 300 PRC.