Hey Nic,
Rule of thumb on a set back is about half of a new barrel, but honestly if I get 500 or more I would be ok with that, this is just to get thru the rest of season before I rebarrel with a new tube. Will get that done over the summer to have for next season, but will use same reamer. Shot the 44gr load again today and it repeated so am gonna go with that for now.
SY



