Anyone got any ball park figures? I know high powered bottleneck cases you are into the "few thousand shots" range. 22LR its somewhere closer to infinity. Where does something like 44-40 sit? Assuming for the purpose of the question a diet of cast and occasionally jacketed but at original power levels, aka 1250fps with 200 grain type loads. More than ten thousand? Or closer to bottleneck bolt action type centrefires?