My 6.5 SAUM has a 28” barrel, but I used a reamer that had .170”freebore.
It is lights out accurate, with the 123, 140 and 147 ELDs. But I seem to be getting “sporadic” meaurement when I am checking for bullet jump…
I’m thinking about building a 6.5 SAUM AR, on a LR308 large frame, so I am...