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The rim size is .492 in and because the round generates 55,000 psi, Remington opted to use a .308 rifle bolt in a 5.56-sized rifle for increased case support. [4] The rim was widened from the .473 in of the parent case to prevent the use of a weaker .450 Bushmaster bolt with this cartridge.
13 Φεβ 2024 · The AR-15 rifle in .450 Bushmaster utilizes the standard .223 Remington bolt, modified by increasing its bolt face diameter to a nominal 0.473 inch (same as the .308 Winchester). When this is done, the counterbore wall, or shroud of the bolt, becomes rather thin.
4 Ιαν 2011 · But since the .30 AR is loaded to 55,000 psi (a bit higher than the .308 Winchester), Remington opted for additional case rim support. Engineers accomplished this by modifying the larger-diameter AR-10 bolt to fit the AR-15 upper.
13 Νοε 2013 · Here you can see the terminal performance you can expect from two factory and two handloads at common ranges with the .30 Remington AR, left to right: 110-grain Barnes Tipped TSX, 125-grain Remington AccuTip, 125-grain Remington Core-Lokt and a 150-grain Nosler AccuBond.
17 Ιουν 2024 · The best powder I found for the .30 Remington AR bolt-action rifle was AA 2200. It was stellar in terms of velocity consistency and accuracy. With AA 2200, I could easily duplicate 22-inch barrel R-15 velocities out of the 20-inch-barreled New Ultra Light Arms rifle with no signs of excessive pressure.
24 Φεβ 2011 · The .30 Rem. AR has proven to be a very handloader-friendly cartridge. This cartridge performs well with bullets in the 100- to 150-grain weight range. Lightweight bullets can go faster than...
27 Δεκ 2011 · The result is called the .30 Rem. AR, and it's the first .30-caliber mainstream cartridge designed specifically for the AR-15. Handloading can provide ideal tactical performance from the...
