Fte, ftf bca 20" grendel.

[bjmac]

Unless the gas block was loose you’ll see carbon leech out but usually seals off pretty quick. The only other thing is if the bolt carrier is out of spec and loosing pressure somewhere. Wolf is definitely dirtier than Hornady ammo in my experience but it doesn’t take long for carbon and residue to form under as gas block.

Nah, this was in/on the bcg. The gas block is definitely sealed, it still has the oil i put on the barrel under it , aside from where the hole is.
On another note, I was shooting this almost free floating. I mean I didn't shoulder it, it was laying on the float tube resting on a backpack. I had to it was 25 with 30 mph winds and I had a vest on. I was shaking like a leaf. Could it be like a lump wristing a pistol thing? In other words, did the gun movement negate the gas impulse?