Sure this has been discussed many times, perhaps some new info is available:
My 336 Marlin 38-55 slugged .3795 and using cast bullets of .380 from the NEI mold Walt made for me, it shoots darned well. Trouble is, the cartridges chamber hard due to the diameter of loaded rounds. When using smaller bullets for easier chambering the accuracy falls off big time.
Any new ideas here, Knowing I am not the only one to have this issue is Marlin doing anything to correct it? :?
RIC