Grendel and silencer troubles

[CaptnC]

I use a lot of range brass in my Grendel's so I see a lot of brass fired from other guns. I'm assuming, it's Hornady Black because I too have read that many guys see brass that is roughed up...that is a factory loaded ammo.

I have limited experience with piston system an my can is still a few months away from being released from jail. But the Osprey system does recommend a lighter spring.

I've never heard of BCG timing being a cause of pressure signs on a case head.