first off: good shooting. my compliments to you.
secondly, and less important since you're already shooting well: why not get a new frame and so on with your next barrel. that's what i've done. i never send in a rifle for a barrel. i buy the whole thing, tune it in with handloads, and then grab the one i want when it's time to go! no waiting for the factory to send me back what i've already paid for, no wearing out of parts on one frame doing duty with a handful of barrels....etc....etc.....etc.
at $179 + tax for my last Handi' i think i've done alright so far doing it that way.
just my sincere opinion,
ss'