I am building a 6mmGT as a light, 18 inch barrelled rifle.
In my chosen contour/make of barrel, I can get a 1:8" twist easily and may have to wait a long time for a 1:7.5". I would prefer a 1:7.5" twist, but I am non-USA so parts availability is an issue.
I want to shoot the 108gr ELDM...