Got a note from Tapco that my strippers have shipped so the questions will be answered by weeks end!
And, the subject of properly or improperly loading the clips got me to pondering the situation and I did an experiment. I loaded my 1954 Romanian M-44 with freshly opened Hungarian light ball as 'improperly' as I could...purposely placing the top round behind the rim of the round below in an attempt to induce rimlock.
Short story is the rifle chambered and ejected all easily and very slickly. Not the slightest hint of rimlocking. This rifle is well worn but had been cared for and is SO much smoother and easier working than my friends 'new' Russian 1944 M-44. I believe that his just needs several thousand rounds run through it to smooth it up.
My little experiment statistically means nothing, but IS the reason I believe that a properly made rifle should have no worries about rim locking. It works SO smoothly and effortlessly that it makes me wonder about people having 'problem MN's' that are picky feeders. Maybe all the really nice fresh arsenelled rifles are TOO new, and just need a good thrashing to break them in?
Also, whilst mulling this over, I checked out the bevel on the rim that always made me wonder why it was there. Rimlock Prevention!!! That HAD to be why they bothered to bevel it so it would not catch the rim above during feeding.
Edit: After posting, I had the wonder that maybe the Romanians are different than the Russians, feed wise? We interchanged bolts with no probs and mine still fed MUCH better than the Russkie. Mags and internals look to be the same, but maybe they changed dimensions to make them feed better? Wondering now....