I'd pull the firing pin and measure (5) or so rounds in COAL,then single feed same from the mag and a closed bolt. Simply charge as "normal"(with handle),rather than from a locked open bolt and then remeasure. On top of that,look for feed/function deformities upon projectiles and lastly,see how the feedramp/extension looks in extrapolation. If it's setting things back,I'd be aspooked of said fodder and would throw the rest off a fhuqking cliff. If projectiles are beat to fhuqk and compromised,I'd curtail same and remedy said woes. Hint.

You are fretting the wrong end of the spout. Hint..............

Brad says: "Can't fault Rick for his pity letting you back on the fire... but pity it was and remains. Nothing more, nothing less. A sad little man in a sad little dream."