Shooting them in my 300WSM @ 2990 fps. I'm a little nervous about 300 yd and less performance. Don't think I'll be shooting much past 400 yds. I've always been an entrance and exit hole advocate. I had a couple of bad experiances years ago when the Ballistic Tips first came out. Don't think I can go heavier as my twist rate is 1:12. 150 TSX's and 150/165 Fail safes have shot well in this rifle. Any and all advice appreciated!