I’ve been watching this one for awhile, I think it’s been around, anyone have any info on it?

Standard 28 bore is .550", it is proofed at .605".....better measure those walls closely. I can not read the pics well enough but if it was anywhere near standard bore diameter to start out then it has really been honed.

A 20 gauge bore would be .615 so SKB point about measuring in well taken. Smallbores run higher pressures as a norm. So real thin is not in, given a choice. Never been a fan of 2 1/2” 28’s or 2” .410 because I can not easily reload them. Buying factory gets expensive in volume these days, if you can find them to buy.

Thanks guys, I didn’t even realize the bore size was over bored but proofed as such. The asking price is way more than what I would pay, still a cool little gun.