You can shoot 150 grain pellet loads with up to a 348 grain bullet. Most rifles just dont shoot well with the mag loads. CVA also says you can shoot up to 130 grains loose powder with up to a 348 grain bullet safely. Ive shot hundreds of 150 mag loads through my BPI with no issues other than uncomfortable recoil. A lot of people are still stuck with the cva apollo and therefore, call BPI products junk due to one bad egg.