I used 150 corelokt years ago in my .270. Good bullets. I had one round fail to pass through on a 215lb buck at 15 yards.(it was an execution shot on a live buck) they stopped grouping well out of my gun so I switched to 150 nosler partition. I am 100% satisfied. Last year I shot a 125lb doe at an extreme angle at 70 yards. It passed through 36" of flesh and made a wonderful exit. The deer was dead in 25 yards. I'm going to hand load next year as I'm not a fan of paying $50 for a box of ammo.....