Preferred Barrel Blanks (PBB) - Barrel #1 Teslong Borescope

Preferred Barrel Blanks (PBB) - Barrel #1 of 2 shouldered prefit for American Rifle Company Archimedes. 300 PRC 1:8 twist, nickel plated carbon, matte, 26" Heavy Palma contour, 5/8x24 threaded. 49.6oz roughly
Never fired, muzzle crown good, threads good, passes headspace using Manson headspace Go (closes), No-Go (won't close) and Field gauges (won't close), all checks out. 2.918" CBTO jam just like with barrel #2. Used Hornady gauge with 168gr ELD-M bullet just to see if both barrels were similar. I am impressed. Sample size of 2. YMMV.
Teslong borescope