I just bought a Reising 50. It tends to jam. I use 20 and 30 round third party Reising magazines. I load them with 25 rounds, fire, and after a few rounds, a live shell will stove pipe as it is pushed to the barrel and jams. I use Winchester 230 FMJ rounds and reloads which do not work too well (flat heads). The 10 round original H&R mag works fine but it is the only one I have. Any suggestions? Tom Tolley