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One step at a time here. Is it ejecting the first round or is that staying in the chamber?
Your bent gouged case tells me the bolt is riding over the case in the mag. It still often half strips it by digging in and gouging it. This is almost always not enough gas. As above, check all leak points.
IMO, the most suspect leak point is block to barrel port alignment. I would remove, measure crown to port on barrel, block front to block port and subtract. That gets the axial right when you reinstall. Then mark center of port on block and use a ruler to mark barrel port center. If you do this well, alignment will be perfect.
Is there some other way to check this?
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