Does this mean anything as in long vs short threads when replacing the bbl or could it be either? Newer Mod 11 in 308 purchased in July 2013 with Nikon 3x9 scope. It has not shot well with 150 or 165 gr bullets and 1 in 10 twist. I will try factory but all screws are tight and scope seems OK. I bought a mod 11 accutrigger used last week for a 358 rebbl but it outshoots this one by a long way. I would like to order a bbl before I pull things off and leave parts sitting around for weeks.
I do plan on a scope swap to make sure where the problem is but the only spare I have is an older steel weaver 2.5. I hate to pull a scope and reset things if i don;t have to. Any thought on this would help, I have neither slugged the bore nor taken an impact slug.