Have you shot 6.5 CM with the small rifle primers? I ask because I talked to Mile High and they gave me the directions to measure the protrusion and it seemed fine. However, I still pierce 6.5 CM cartridges with small rifle primers.1. Doesn't really matter small or large. Both my AIs have large and I don't pierce primers. If you do, the firing pin protrusion is adjustable. I had to do it on my AW. Simple.
Whether I measured it correctly is another thing. Do you have any directions you can provide for measurement and adjustment?