Beretta 1301 Comp Gen 2 Upgrades?

*not legal advice* but when we shot IPSC nationals for shotgun in 2019 at equipment check they had a pile of SAAMI spec 3" and 3.5" dummy shells machined to test capacity. So long as they could not seat the 6th round in the magazine tube you were in compliance and I was told *by the match organizers* this was at the instruction of the CFO. 6 rounds of SAAMI spec 3" works out to be 420.6mm (70.1mm x 6) so as long as your useable magazine length was less than that number, you were in legal compliance. My tube ended up being 418mm.

In reality that worked out to be 7 2 3/4" shells in a 3" chamber and 8 2 3/4" shells in a 3.5" chamber for most ammo brands. Add one in the chamber and one ghost loaded, your 3" shotgun can hold 9 rounds.

Whether or not an everyday cop knows that and is willing to charge you is a different story.

In the match I did recently we were told at the start that a 3" gun can hold 8 rounds max and a 3.5" gun can hold 9 rounds max. There was no wiggle room.

The explanation you give makes perfect sense to me but it seems that this is not the universal approach. And then there is the everyday cop issue you allude to on top of that. More hassle than I am willing to put up with.

With this in mind I am back to finding a 3.5" gun for my next build, in many ways 3.5" guns are as good / better that the smaller offerings but the biggest issue is they all seem to have very long barrels for dynamic competitions (ie 26" / 28" barrels) and shorter would be better for this application.
 
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