Reply To: An Ammo Question › Forums › Reese Bottom Chat Room › An Ammo Question › Reply To: An Ammo Question January 26, 2016 at 7:17 pm #3657 AnonymousInactive I think the ammo will be fine. What powder and bullet are you running? I have a 223AI that has a 8 twist barrel. It shoots good at 200 with 52 grain bullets but can’t seem to get it tuned with 68, 75, or 80 grains out to 600. Tried Varget and RL 15.