I just ordered a cartridge gauge from Sheridan Engineering this afternoon. It has a segment cut out so you can see what’s going on inside.
https://sheridanengineering.com/product/57x28-ammunition-gauge/I misquoted Pearce on the primers. He actually said the SPMs gave less pressure than the factory ones. He pulled factory ammo apart and used the primed case to test with his loads. Presumably factory ammo is loaded with SRs and I’m going to use them as well since I have a bunch.
