I used to have a Browning BLR in 308 and it loved the Corlokts in 150 grainers. It constistantly shot 1.5-2 inch groups and I never lost a deer using them when the shot placement was correct. I have tried them in my Encore pistol and rifle barrels in 308, but can't get 'em to group well enough for me. But I guess thats the difference in firearms.