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Old December 20, 2012, 08:20 AM   #20
hogdogs
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Join Date: October 31, 2007
Location: Western Florida panhandle
Posts: 11,069
While wondering what gauge other guns may be, it won't matter when comparing to yours...
You cannot guess... A 16 gauge would look nearly the same as a 12...

What you need is to measure the bore... at muzzle... Considering there may/will be a choked diameter...

Here in this link is a chart with bore diameters of each gauge along with the dimensions to subtract from "true bore" or cylinder choke (no choke at all)...
http://www.colonialarms.com/chokespecs.html

That will tell you what gauge your gun is...

Being quite old, you cannot assume it to be a 3 inch shell chamber nor even a 2 3/4 inch chamber... A QUALIFIED gunsmith will have a set of chamber gauges in his tool assortment...
Basically will do what is shown in the pic with this link...
http://www.csmcspecials.com/Handy_Mo...ge_p/t0321.htm



If you have a 2 9/16ths chamber, a 2 3/4 unfired round will fit but wouldn't be safe to fire it...

You need both of these dimensions before trying toload and fire this firearm...

Brent
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