Replaced the magazine in the classic Super Express. Best guess on the shorter coal limitation, piss poor manufacturing / forming of original magazine.
The rifle fed fine, doubtful if factory ammo would have ever been an issue with coal. But, the ends on the forward most top are bent inward, one of the rear top was also, the upper top end of magazine was about.040's less length than the bottom 3.4".
The replacement should comfortably allow 3.350-3.360 coal of the 404 Hammer.
