I'm not familiar with sleeping lines I didn't handle the gun it was on a antique gun website in the U.k. . I know a gunsmith who bored non taper 10 gauge barrels to 8 gauge and tested them to 21,000 psi but that was modern steel .
ive seen purpose built guns like 16 ga on 20 ga frame or similar but never a frame built for one gauge having a larger gauge built on it .
|