Consider these points before you buy.....
1. You will have to shoot full power loads all the time. Can't just go out and do some fun casual low cost plinking with cheap mid-power lead bullet loads. you have to shoot expensive factory jacketed loads, or the equivalant in a handload, just to cycle the action.
2. You will not like the way the gas system gets fouled with powder residue, and has to be cleaned regularly, to avoid unreliable functioning.
3. If you reload, you will be trying to find all the brass that gets thrown all over the ground, or if indoors, it gets thrown against the wall and bounces out into the shooting lanes.
4. If you don't reload, it gets real expensive to shoot it much, and you will have to shoot it a lot if you want to master it.
5. An improper grip will contribute to functioning problems. The recoil of the .44 is not too bad, but the .50 will punish you for a less than perfect grip.
6. This is a very intense, narrowly focused weapon....yeah it has a WAY COOL factor built in...but....it's like the georgous babe you lust after.....somewhere, there is a guy that has to put up with her crap!!!!!