I have used the 160 Nosler NP at 3000 fps on a lot of elk and deer. Good job always no suprise. My hunting parter and his wife use the 160 277 NP in a pair of pre 64 Win. M70. Its their moose to mice load. I have watch several of the kills they had made on deer and elk. The 277 160 flat hits with a visual effect I can't explain. I stood next him when he hit a raghorn bull in the shoulder at 325 yards. The bull quivered and it looked like his shoulder caved in. If I get another 270 thats the first bullet I would try.