Case not ejecting on a fired round

[montana]

I believe I found the root problem. I measured the distance between the edge of where the hole was bored through the barrel allowing the gas to vent into the gas block and to port in the gas block. If I seat the gas block against the the shoulder of where the gas block seats against the barrel the gas block port extends beyond the barrel port by approx. 1mm. (Please see the attached pix.) I tightened down the gas block 1mm prior to where it engages the shoulder of the barrel and it centers over the port on the barrel perfectly. So who is at fault? The gas block manufacturer for incorrectly drilling the port in the block, or the barrel manufactured for incorrectly drilling the gas port in the barrel 1mm further down the barrel (closer to the muzzle of the barrel?!?[ATTACH=CONFIG]18346[/ATTACH]

You are at fault if the gas ports don't line up Not all gas blocks sit flush to the barrel journal shoulder. I take a measurement from the edge of the gas block to the port center and take a measurement from the shoulder of the barrel journal to the barrel port center to get perfect alignment. Then I verify my alignment with a bore scope and gas tube light. If you have a bottom set screw type gas block, the SLR barrel dimpling jig does a good job lining the ports for proper dimpling..