I Got an 1894 in 44 mag about a year ago. First thing I realized was that they evidently had the barrels made the same place they got the Handi 44 barrels. In other words they were overbored. .429 size bullets would not group, just like in my now departed Handi barrel. After a lot of experimentation I finally got a 240Gr laser cast lightly loaded with AA#2 to do reasonably at 50 yards. The pattern of this bullet really opened up when I tried to drive it much faster with other powders. What really surprised me was the accuracy I got with Hornady XTPs. As long as they were driven well with a goodly load of H110 they would rip cloverleaves at 50 yards. Again the 180Gr load was matched in accuracy by the 300Gr, quite a surprise. The problem was that I was really looking for a gun that would shoot light cast loads really well. I have a Ruger Deerfield that will match the 1894s accuracy with just about any jacketed bullet I feed it but it takes a heavy load to cycle it and you are supposed to not shoot cast in it.
Just as I had the accuracy problem solved with the 1894 but then ran into another problem. As I was working on the different loads at the range I fed them into the chamber one at a time with no problems. Then after I had a load that shot well I loaded up the magazine and with my first crank of the lever it jammed. My rifle had the dreaded Marlin jam or 'letting in two' problem. It works well if I will chamber one round and then load only one addition round making the gun essentially a two-shooter. I know I could send it back to Marlin for a fix but prefer to have it looked at by a local gunsmith. The fix is evidently a simple one, according to the internet article, but I have had bad luck working on guns and cars so I will leave it to someone that knows what they are doing. This is my experience with the 1894 44 mag. I have one in 357, that is I had one in 357 until I let my wife shoot it, and we have had no cycling problems with it. I think either gun would make an excellent choice in an area where the previous choice was shotgun or muzzleloader only.
RJ