D S, I have the NMB 6 1/2 41 mag its my second one . First one got away in a moment of CRS. Mine has the SBH hammer and triger in it, so I have something I can get my thumb on to cock it. My gunsmith put the hammer and trigger in while he was polishing the action. I went to the hogue grips for comfort while shooting. I just got the one ragged hole sight for it, but havant had a chance to shoot it yet, due to work, weather and a couple of emergency home repairs (its been like a beaver colony here - one dammed thing after another). Dont know bout jacketed as all I shoot is cast in it and my 1895ss. Plan on getting the new clylinder pin and putting it in.
Maybe in the next week or so will be able to go shoot a little. Mostly running hard cas 215gr gc swc on top of a handfull of 2400. It amazes the 100 yd rifle shooters when I start plinking out at the same distance. Everybody told me I needed a 44 mag, but I can do the same thing with the 41 mag. I carry mine in a cross draw holster while in the woods, or fishing or gold panning. made up a bunch of snake shot rounds for the Buzz Tails. First two rounds are snake shot, next 4 215 grainers.
Good shooting
Gun Runner