I should mention that the ones I got off Corwin-Arms work awesome in all 3 of my Mosins (91/30, M44, M38) and my SVT-40... They're smooth enough that I don't need to do the "top round lever" trick to drive them home.
They're just far better made. I'm going to grab a few extra packs of them at the winter Gun Show on Saturday, just so I know I have a lifetime supply.
Once you find something that works with an old milsurp - stock up. The good things tend to vanish, never to be seen again... And then you're stuck reading in forums stuff from crusty old farts about the great "Thinger-ma-bob I got off Jimmy-Joe's surplus, back in '82, before they close... Cost me a nickle and been usin' it evar since..."
Better to get the good stuff when you can, and 20 years down the road, you get to be the obnoxious old fart with all the cool toys.