Hi all, first time poster so I hope it's in the right spot..

I have recently purchased on old 340C from my LGS & when I load the magazine it feeds the first round with no issue, cycle the 2nd round & it fails to feed (appears to coming in at too steep of an angle) & the same with the 3rd round. However the 4th round with cycle perfectly !!

Has anybody experienced this issue ? Mag has been stripped & cleaned, no irregular burrs were detected on any faces that may cause obstruction.

Cheers Daniel