Originally Posted By: GLS
Originally Posted By: John Roberts
It's actually about a 3 1/2" to 4" disparity in length between a semi-auto and an o/u or sxs, in general. But your point is a good one.
JR


And that is gauge and chamber length dependent. It can be shorter for 28 and 16 gauges which don't have modern ammo longer than 2 3/4" although 28 ga is expanding to 3" shells.


GLS, gauge nor chamber length has anything to do with overall length. A 20 ga. (or 28 ga.) A400 Beretta with 28" barrels is the same OAL as it's 12 ga. big brother. Of course chamber length inside the barrel has nothing to do with external dimensions.

Not quite sure what you are saying about the 28 ga. and 3" shells
JR

Last edited by John Roberts; 06/01/17 12:12 PM.
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