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The .228 Ackley Magnum is also based on the 7×57mm Mauser cartridge but is also necked down to .228 caliber (5.79 mm). Bullets in this caliber are hard to find but provide greater weight than .223 caliber bullets, up to 100 grains (6.5 g), without excessively quick twist rate.
.338-06 Ackley Improved, an improved .338-06 A-Square (which is a .30-06 necked up to .338 caliber).348 Ackley improved, an improved .348 Winchester which gets about 200 feet a second more velocity over the standard..35 Ackley Magnum No. 1 and No. 2 short, based on the .30 Ackley Magnum cases; there is also an Improved version of the No. 2.
The Grizzly Cub is a shortened magnum for standard length actions. It's created by re-forming either a .338 Winchester Magnum or .308 Norma Magnum. P.O. Ackley favored short .30 caliber magnums and called it "highly recommended."
An overview of 7mm caliber cartridges, their history, and uses in firearms.
The .257 Roberts, also known as .257 Bob, [2] is a medium-powered .25 caliber rifle cartridge.It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the 5 mm (.22 in) and 6 mm (.24 in), and has more energy, but is harder recoiling, similar to larger hunting calibers, such as the 7 mm (.28 in) and 7.62 mm (.30 in).
The 7mm-08 Remington is a rifle cartridge that is almost a direct copy of a wildcat cartridge developed around 1958 known as the 7mm/308. As these names would suggest, it is the .308 Winchester case necked down to accept 7 mm (.284) bullets with a small increase in case length.
But a strong earnings season has helped offset some of that Mag Seven underperformance. According to the latest earnings update from FactSet, published Feb. 19, both the percentage of S&P 500 ...
The 7.92×57mm Mauser is a common chambering offering in rifles marketed for European and North American sportsmen, alongside broadly similar cartridges such as the 5.6×57mm, 6.5×55mm, 6.5×57mm, and the 6.5×68mm and 8×68mm S magnum hunting cartridges.