Bore sizes

Austin J Hawthorne Jr. · 02-15-2015, 10:05 AM

Thanks for all of the replies so far. Would anyone hazard a guess as to whether or not the bore diameter would/might be based upon frame size. My lifter is on a # 3 frame, and it has the step from chamber to bore ( no forcing cone ). Sometime today I will measure the chamber diameter with my High Tech Tape and Dowel, and will post it later

10ga Hammer · 02-15-2015, 10:56 AM

Posted this on another thread. 1878 10ga 2 frame. Can still see reamer marks in the barrels, has CC on 90% of breach face and roll joint. Gun was shot very little, both bores measure .792 with .23 choke. Many early 10's were overbore by todays standard.

Pa SxS · 02-15-2015, 11:24 AM

Robert, what does the rib inscription say for barrel steel? Your gun shows as PT (plain twist) in the stock book.

10ga Hammer · 02-15-2015, 11:39 AM

Yep, Plain Twist. Love the hand engraved rib.

Double click to enlarge.