I did a wet news paper test using the 8mm - S&B 196 gr. Cutted edge; 300 Win. Mag - 180gr. Federal with Nosler Partition, and 300 Win. Mag. 180gr. Hornady Heavy Mag.. The 300 Mag. with the Noslers- Penetrated the farthest, But all Noslers lost their core (As Usuall). The 8mm was a close second- All 3 S&B's held together, and one mushroom was huge. I mean larger than the size of a 20gauge bore. The 300 Mag. Hornady - Had the least penetration and 2 out of 3 - Fell apart. The S&B's shoot O.K. in My 98 Mauser - any where from 1 to 3" @ 100yds.. For the price of the S&B's, They are one heck of a Cartridge with a lot of snap. I think S&B advertises about 2600 FPS.out of the Muzzle, for this load, but it loses Velocity quickly after 100 yds.. This 8mm Cartridge would be good for anything in the Lower 48.