Re: ABS barrels
RH, wish I knew more, but I think ABS has some testimonials on their site. I talk to Accurate Innovations occasionally, and at one time, they strongly recommended ABS barrels. You could call and see if they know any good stuff, etc. I would call ABS and ask about any special needs for installing their barrels, chucking up, turning the tenon, crowning, or holding in a barrel vise. They should also tell you if the barrel itself is theirs or if they wrap someone else's barrel. It would be good to know how they handle heat buildup too.
Hopefully, someone who has used their barrels will jump in. At any rate, I'd be interested to know what you find out.
Good luck, Tom
Texas State Rifle Association Life Member
NRA Endowment Life Member
A big fast bullet will beat a little fast bullet every time