This rig is running fine with my handloads. But I believe it is a little over-gassed with the PMC XTAC 62gr.
The PMC load has the extractor jumping the rim, and leaving the case laying in the receiver, causing jams with the next round up. On a last round, it will lock the bolt back, but leave the spent case laying on top of the magazine. There is a heavy extractor mark on the spent case inside the rim.
Looks like I need an H2 buffer? I'm using the standard 3 oz carbine buffer right now.
