I shoot 100 grns 777 and powerbelt 190 or 195 grn bullets, I do not remember which weight bullet it is but I bought a whole bunch of them from Wal Mart after the season for $2 a pack of 12. It shoots great after I installed an oversize pin and had the QLA removed. Prior to the modifications it did not shoot worth a darn. After the modifications I can shoot all day at a 100 yard target and it just makes one big hole.