If you can shoot one before you buy I highly recommend it. These are a love/hate gun. The triggers aren't great for a single action. Their heavy, the .50 is very expensive to feed, even if you reload. However, there isn't much more fun to me than going to town with 7 .50 AE rounds one right after the other
even if it did just cost me almost 2 bucks even if I can find all the brass.
I got a .44 Mag barrel for mind to make it cheaper to feed and to fill my desire for a .44. I find the recoil to be snappier on the .44 but there's much less barrel rise. The wide backstrap and large mass of the gun makes recoil very tame. I can shoot 3-4 rounds of full power .50 AE loads one handed before it starts to sting.
If you want to hunt the 10" barrelled versions are going to be more accurate and give you signifigantly better velocity. There's a good 3 feet of flame that comes out of the barrel on full power .50 AE loads with H-110.
So, if you like loud noises and big flashes it's a ton of fun. If you want a bulseye gun this is NOT it. Althouth there is a .357 Mag 14" Sillouette barrel for the Mk. VII from CDNN.
If you want a gun that's cheaper to feed and still a lot of fun don't pass up the .357 Mag. It was origionally designed in this calliber and shoots almost like a .22 with it. It can be shot very fast and very accurately and comes right back down onto target. Very fun and sounds like a .44 Mag going off.
YMMV and all the usual disclaimers