Baldheaded
Ultimate Member
Question regarding an AR15 zeroed with 55gr. ammo and considering changing to 62gr. or 77gr. ammo. Should you stay with a certain grain ammo like 55 once you get zeroed or can you change to 62 or 77 without getting off zero by to much? I could probably figure this out myself at the range by trial but I don't get out much this time of year. From what I have been reading it appears 62gr. ammo is a better all-round go to. I also read that when going out at distance a 77gr. bullet is better. I am sure this has been touched on here before somewhere but I still would like to hear from you guys about this. I guess it can't hurt to just have some of all the ammo and use it based off your needs. Does going from 55 to 77 really throw off the zero by that much?