If you have a verified good shooter, why not just send it off to be threaded? Silencer Central does it, and an excellent job too.I have one I may be interested in selling if I can get one ordered w/ the threaded barrel. Ruger site just recently shows them as available. I haven’t checked into closely yet. That all said, the 77/22 Hornet that I have is an awesome flat shooting rifle!View attachment 451933
I've sent off 3 so far; no problems, and back in a few weeks.
https://www.silencercentral.com/services/barrel-threading/