Originally Posted by
simgre
I use a RCBS 38-158 CM mould. It's a RNFP designed for Cowboy action and going through lever guns. Use a 20-1 alloy or range scrap with some lead.
If using .38 spl cases, seat the bullets so the COL is equal to the .357. The timing of the Marlin cartridge lifter is designed as such. More preferably, use magnum cases. You can still load special data in magnum cases.