26" 1-8 twist 6.5 Creedmoor SS Comp Contour Proof threaded 5/8x24 with exactly 86 rds down it. Built for a TL3 and bought from Altus in December 2021. Asking 400 shipped OBO
To be honest I'm not real sure. With 130 AR hybrids the base to ogive measurement was 2.261. The only spec they ever gave me over the phone was when I called about the Dasher reamer they use. I believe everything else from them is SAAMI spec.