Jonthomps, have you shot a barrel out on one yet? If so how many did it take? I'm at around 370 and thinking of getting another one chambered just in case there is a wait.
My 26" Proof Research had around 500 through it & was looking "a bit rough" say 1/2-2/3 of its life according to the bore scope guru that appraised it.
It was with him because I had neglected it & let a lot of carbon build up occur
It was inaccurate & over pressuring, I thought it was dead & the Defiance was heavily primary extracting.
I figured out the round count then realized the brass was on its 9-11th firing & was way too hard which was causing the primary extraction issues, just like my 338 Normas lightbulb
After he removed the carbon, it was just as accurate with the original 230 target hybrid load, I tried the 225 ELDM with outstanding results as well, which it is running now.
I prepped up some new brass, the primary extraction issues disappeared, happy days.
Lent it to a client after major dramas with a local Carbon Barrel build, that will never happen again.....
Its performing flawlessly again