Like I mentioned, a better description would help. Sure they are just getting started but we’re only talking about a few more words on an existing web page.My question is are they lapped? Lapped after reaming? Lapped after rifeling? Snake oil for me a special airgun barrel...A barrel can be softer steel with less pressure... But there are dozens on excellent premium barrel manufacturers making quality barrels out of 4140 and 416 stainless.... 45acp barrels are.softer steel and machine easier...
I seen it said ‘airgun use only’ but didn’t know if it was because of material or bore dimensions. It could be that the .22 is a tight bore and not be acceptable for rim or centerfire .22
Again, more info needed….
Dave