.300 Win Mag..I hope they're good...I just loaded bunch of 95 grains in 6mm. In a bullet that light, I wanted it to hold together at that high velocity, and the Barnes will do that. I wouldn't think you'll have a problem, especially with that cannon. I've heard numerous sources report a higher percentage of one-shot kills. Mine shoot very well. Hoping to get to try some on deer next fall and maybe antelope!