I got a little lazy on reloading and ended up with no ammo to fit the AR for hunting. I picked up a box of the 52 gr and it functioned well. So I found a cheaper source online and ordered 500 rounds. I have only fired 25 or 30 rounds. The first 5 were as fast as I could pull the trigger to check functionality. The next 5 were to establish a group to re-zero. The rest single affairs on predators and varmints. No problem out of the bushmaster with the limited experience. I have not shot them in any of the others. I went with them because they are brass case for reloading, when I get time to do so.