Harry, That's a beautiful 10 gauge Lifter!
I really need to invest in a bore gauge for both a 10 and a 12. I did use calipers at the muzzle and got approximately: .7175. It is a 12 gauge so I am not sure what number I would use to get a reference for constriction. The .751 you mentioned was for a 10 right?
I agree these are just wonderful guns and I really enjoyed shooting mine yesterday. I like see those brass shells with your lifter. I shot up the last of my black powder shells yesterday and need to make some more in both 10s and 12s.
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