Buy a few different brands of ammo and try them,find the one that shoots best for you and stick with it. Remember every gun will shoot different ammo better different,for example,my Remington 700 in 30-06 LOVES Remington core lokt 150 grain,1" groups all day long,now my friend has the exact same rifle,his does good to get a 3'' group with Remington CLs 150 gr. But it shoots 1'' 1 1/2'' groups all day with Federal 165 grain. How that helped and good luck!