I've also got a 38-55, load it for three levels of loads with the same 250gr cast bullet. 1225 fps for target and plinking, 1400 for hunting, and 1600 for heavier use. One thing with cast bullets, maximum penetration is at 14-1500 fps, anything much over 1600 lessens penetration as the bullet starts breaking up faster.
My other limited purpose cartridge is the 25-20 WCF. Mine is a 113+ year old '94 Marlin. Due to it's age I load a 89 gr cast bullet at just under 1300 fps and use it for steel gongs and small game.