10 Ga. Full choke in Thousanths

[Don Kaas]

Harry, your 10 has .804 bores now. It probably left Meriden with bores closer to .790. Most of my early 10s have been around that figure as most early 12s are around .750. My last project, a 36" GH 10 from 1912 had pitted bores of .779 and chokes of .042 when I bought it. It now has clean bores of .790 with the chokes remaining at .042". With 1 3/8 oz of Bismuth #4s in an SP-10 shot cup it patterns "full and full"...

[Harry Collins]

Don,

You are probably correct. The gun, I was told, was restored by Del Grego and could well have been skim bored (if that's the phrase). It still showes some vey light pitting.

Harry

[C grade]

Austin
Do you know of any gunsmith that still usess that method for chokes. I have a sleaved 20ga hammergun that I need the chokes opened and do not trust someone to just open them up and hope the shot pattern is good.
David