So I took some measurements of my 8 ga barrels because I noticed a 8 ga plastic wad was too big but the 10 ga one felt close to right .
This gun should predate chokes from my understanding .
The diameter at the bore is around .787 and the muzzle thickness is .080 .
The breech diameter is around 1.350" . I measured the 8 ga wad I have at .831 I couldnt really get a good reading on the 10 ga wad as its made from alot softer material but it was reading .767 .
Wouldnt .787 make this a 10 ga ? If so its probably the heaviest 10 ga ive seen at 16lbs
. Well on the bright side I guess its legal for geese .