Hello Folks,

Considering that the Marlin 336 lever action rifle has been chambered for such cartridges as the 307 Winchester, I’m wondering why I can’t improve the performance of my 30-30 without re-chambering. The limitations appear to be case volume, and case strength. If volume is fixed, could increasing case strength make an improvement? I have on hand a supply of new 375 Winchester cases, which I can easily reform into 30-30 cases. From an armchair ballisticians point of view, do you believe a significant improvement is possible?