Graybeard, believe your right about the Marlin. Couple month's ago another poster, PrebanPaul asked the same thing about the 357max cartridge. Basic lenght change of 1.285 to 1.600. Somebody came up with the answer, in a Marlin it would be quite expensive to change a 1895 to the longer cartridge. Not wanting to spend the next 2 months house payment, that option is probably out. But I did notice that the Puma has one chambered in the .454. So, with the .445 according to the reloading books, having the same pressure as the .44, the Puma action should be plenty strong enough. Guess I had better do some research at the next gun show to see if the action is alittle easier for the change!! gypsyman