Have a very thin gap between barrel and breech. Honestly can't tell if it's smaller at the bottom or not. Don't want to hone the lug and make it shorter if it needs a shim instead.
Wondering if there are other ways of determining which fitting option is required?
It's ejector barrel. Also wondering if ejector pressure could hold the barrel so tight I can't wiggle it to verify it might need a shim?
O/C question I know, but we could all use a little help. Thanks.