Those with AR's with 16" barrels with 1:7 twist I need your input

[BUCKrub91]

I can get 2" groups easily with my 1:7 twist barrel at 100 yards shooting tula and wolf ammo with iron sights... I imagine the groups would be even better with a scope and pmc is way better ammo than tula or wolf... so I think you will be just fine with 1:7 twist