I have an early Marlin 1894C. It was purchased used in the mid 80s. I shoot the SAECO 180 grain RFGC. I cast them out of linotype and shoot them lubed with Blue Angel, but unsized. I run them through a .360 sizer die which only lubes them. I use CCI450 primers and a stout charge of surplus WCC820. They feed perfectly through my carbine.
Bill