Thanks...
This is probably a dumb question but what exactly is a 2 1/2" chamber? Is the chamber exactly 2 1/2" long or is it chambered to fire 2 1/2" shells? I assume the latter -- so a 2 1/2" chamber is probably 2 3/4" long?
And as a followup, can a 2 1/2" chamber safely be lengthened to 2 3/4"? Pros and cons?
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