Barn job workaround?
Do you think this is accurate (enough)? I went through my socket set and found the widest one that would fit in the barrels. Attached an extension to make it longer, slid it in, made a sharpie mark on the extension where the edge of the barrel was, and measured it. I got 2 7/8”, so I should be safe to shoot with a 2 3/4 shell? Make sense? I guess you could also drop a 3” shell in and if <=1/4” is still sticking out….
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