be carefull and inquire
2-9/16 was standard chamber size for a long time often they were opened up for 2-3/4" shells
the chamber has to account for the crip to unroll as the charge is fired.
if i'm not mistaken a 2-3/4 shell needs 3" of chamber space.
SO you may very well have 2-3/4" chambers and not 3"[/quote]
I assumed (sometimes dangerous I know!) 3" due to proof house markings on underside of barrel of 10-76. After your cautionary post I measured the chambers as best as I could at 82.8mm 3-17/64" which I guess (also dangerous practice!) would bear out as a 3" or 76mm chamber. I have not tried any 3" 10g but have tried 2-3/4". As a believer in using my collection as much as possible, I must confess to using 'Little Skeeters' 10-12 converters as 10g is so expensive. With a 12g, 28g #8 shot, I get great patterns and the recoil of a bb gun. This antique gun gets used and never overstressed, however if I get the chance for a waterfowl day this would be my gun of choice!Statistics: Posted by impala59 — Mon Jul 30, 2018 8:24 am
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