turbobrick
WKR
I had 2 of my Tikkas and 2 Savages cut, tapered, and threaded to the Q/Sig taper. The taper allows you to have 5/8-24 threads then run the taper to 90* adapter to have an adequate shoulder. I prefer it since its not thread to thread adapter, just a taper resting on another taper. Just another option. Morgan at Class 3 Machining is well versed in the Q/Sig taper, I'm sure there are others out there too.We have dozens and dozens of T3 lites threaded 1/2x28 and 9/16ths with an adapter for 5/8x24. If your gunsmith won’t thread a T3 barrel at 9/16ths…. I’d call Shaen and have him do it.