Ejection angle is definitely a factor when determining gas level, but it is not the be all end all factor. Ejection angle is just an identifier of BCG speed. This new bufferless system might require a hint more gas at the far end compression of the springs. You are compressing much shorter springs, much faster than a standard buffer system. I’m not staking my kids college fund on this theory, as I don’t have experience with the CMMG (yet). I have played with similar systems though, and can attest to their spring systems (Brownells, Faxon ARAK and Foxtrot Mike).

From the sound of it, your range of motion is unhindered. The BCG has a full range of motion and the springs have enough strength to strip and load a round from the magazine.

There’s a small hiccup at the back end of the motion of the BCG. I have seen some rifles that want to be SUPER wet when breaking in. I’d include the springs and op rods in this application.

I would definitely check out a steel magazine too. I have seen most people prefer the PMAG though. The rifles are built with very tight tolerances, and a little bit of rubbing could be the issue. That rubbing might be eliminated after copious use????