Search Results
7/20/2025, 9:35:54 PM
You get 300+ grains, compared to the 300 Blackout's typical 220 grains (not counting cast lead bullets of course).
But that's not the whole story, 338 ARC also has a 20% larger bullet from the front, as the radius is squared when calculating the area of a circle (i.e. a bullet viewed from the front). So 20% more chance to hit vitals or nervous system, and 20% less overpenetration, all other factors equal. 300blk's biggest weakness is that subsonics are essentially guaranteed to overpenetrate due to their unusually high sectional density. A 220grain spitzer 300 blackout will easily go through two blocks of gelatin. In practice this is very wasteful and not what you want.
They didn't use a rarted twist rate like the 8.6 BLK, so handloaders will be able to use plated or cast bullets unlike 8.6 which requires very pricey solid copper bullets particularly for supersonic shooting.
But that's not the whole story, 338 ARC also has a 20% larger bullet from the front, as the radius is squared when calculating the area of a circle (i.e. a bullet viewed from the front). So 20% more chance to hit vitals or nervous system, and 20% less overpenetration, all other factors equal. 300blk's biggest weakness is that subsonics are essentially guaranteed to overpenetrate due to their unusually high sectional density. A 220grain spitzer 300 blackout will easily go through two blocks of gelatin. In practice this is very wasteful and not what you want.
They didn't use a rarted twist rate like the 8.6 BLK, so handloaders will be able to use plated or cast bullets unlike 8.6 which requires very pricey solid copper bullets particularly for supersonic shooting.
Page 1