In my 270 I have tried 130 gr Rem, Fed and Winchesters....they all got same poin and all grouped well. The Winchesters may have actually grouped better than my beloved Federals this time. All 3 were under 1.5-2 inches with 5 shots. On the other hand my gun didnt like the 150' at all..lol. Only thing to do if ya can is get a box of everything and try em all.