I’m certain some folks are. I currently have and use a Marlin ‘94 in 44 mag; it’s a very nice handy, carry rifle. As to those bullets you mention, I assume you mean the Hornady FTX’s. Actually, running them through Horn’s ballistic program for the 44, 225-gr load, a nominal 1800 fps (rifle velocity), and their BC, it really adds nothing really useful in regards to a flatter trajectory and thus extended range in the 44 compared to a more typical 240-gr soft point, and I would assume that’s true for the 357 also.