i have a marlin 336 in.35 rem., I made up some hand loads for it and the problem I'm having is that every so often a primer is not going off , I am going deer hunting next week , don't have time to get to the gunsmith , someone said I should try to tighten the hammer spring , to made it hit the primer harder . does anyone have input on this , or has dealt with this problem before , I sure it is the primer because when a round doesn't fire I pull the hammer back again and when I pull the trigger the round goes off .thanks for the help....later Joe