6mm ARC

[VASCAR2]

There are either .125” bolt face depth as is used in 5.56/223 and most 7.62x39 bolts. The 6.5 Grendel uses .136” +or- .001” tolerance. Sounds like they either used an out of spec reamer (maybe worn out) or they messed up on chambering dimensions. I hope the 6 MM ARC doesn’t suffer the same problems as the 6.5 Grendel with PTG reamers. I’d ask them whose reamer was used, my money says PTG!