500 gr. jacketed bullets are usually designed for a longer oal. and don't have a crimping groove in the right place for the Marlin '95..... you could force the crimp with a lee factory crimp die but I dont know if it would hold the bullet from slipping into the case....any how the bullet would have to be seated so deep it would cut into the powder space and create higher pressure and you would be crimping on the tapered part of the bullet! In the Ruger #1 though the 500gr. Hornady S.P. is excellent. In the Marlin why not use a heavy WFN cast bullet with the crimp in the right place for the lever gun??