30 Round Seymour Magazine ?

[browningautorifle]

The standard USGI magazines are the top of heap

I made a point of using 15 rounders, USGI. No problems even with old ones.

The magazines of this weapon are a wear item. I believe that this is why they were ordered by the millions.

I got the idea somewhere that they were meant to be used once and discarded. Maybe it was the talk about them coming forward loaded from manufacture with caps on, used and dropped. Don't remember where I saw that.

if you reload this is important and the bullet must be seated at the proper depth.

Yes, trim and chamfer, all must be done. Then seating has to be checked. I never had trouble because of that. Others I know did.