having had experience with Browning, Winchester, Ruger, and Marlin lever guns in calibers ranging from .22 rimfire (short, long, and long rifle) in Marlin and Browning, .44 mag in the Ruger, and 30-30 in Winchester and Marlin. With these I have never experienced a jam. Is this something to do with the .45-70 chambering?? or have I just been lucky these past 40 some odd years??