Marlin has twice made 41 magnum lever guns. Back in the 80's the 1894S model (24" round barrel) could be had in 41 Magnum, and three years ago Davidson's had a run of 1000 "Cowboy Carbine Limited" 1894's that have a 20" Octogon barrel. These can occasionally still be found NIB, look on the Davidson's website for dealers near you and give them a call.