I owned a TAC50 for a while back from 2006-2009 roughly. I got tired of loading/feeding that beast quality ammunition. (Says a guy who just jumped into 375CT).
You won't be firing M2, M33, ammunition through it and be satisfied with the accuracy - not by any means. The round selection though is impressive if you are into just banging around with it. It's essentially a scaled-up 30-06 cartridge. I think most people that go through the 50 BMG phase end up selling them relatively quickly after all of their friends have seen it light a few rounds off. You definitely won't enhance your marksmanship skills with the beast. In fact, it might actually make them worse if you aren't mindful of the mechanics.
Not trying to dissuade your purchase here. The only way to get it out of your system is to do it. It is fun, but it won't be cheap!
What sort of info are you looking for in particular?
It is NOT cheap!!! For a rifle, you're gonna want good brass. I like Lapua, but goddamn, have you seen the price on 50 pieces of Lapua BMG brass!? And no, pull down and 1x brass ain't gonna cut it. It's okay for fun, but the wear and tear the .50 suffers cuts down on blasting. I don't do it at all. That fucker only gets fed prime rib --quality brass, quality bullets, H50 powder (which BTW costs more per lb. than most smokeless powder, other option is US869, which I use in the M2).
I got into it, and goddamn. I'm so deep in I can't get out, "I'm too big to fail" at this point. DTA HTI and M2HB... The loading gear costs as much as the rifle, the optics usually cost half as much, the bipod and everything else it uses is twice the price if not more, bulk BMG components aren't cheap but the only way to get the discount, yes, you'll need higher quality components for a rifle vs. M2HB (I have both, and holy shit the M2HB is even more expensive and I did not see it coming). And to sleep at night, you're gonna need a high end jewelry vault.
You'll find yourself buying drums of brass from the army and have semi trucks regularly dropping off pallets of brass and links. Think twice.
Still haven't bought my .338. I know I'd be able to use it more and it'd cost a helluva lot less. For shits and giggles, you may as well buy that 20mm rifle made here in WA. Over 6' long, 100lbs., it's a DD but it's bad ass, nothing like it. Barrel is as big as your forearm.
Working .50 and loading for it can be a pain in the ass. Especially if you have tons of it to do like I do. You'll need the Dillon press and it's still a lot of work.
HOWEVER, nothing, but nothing, beats 688gr. of "FUCKYOU" sprinting along at 2800fps. Start saving milk jugs for targets (easy to see explode when filled with red food color) because you'll chew up AR500 plate like it's going out of style. You can get thicker plate, it'll last longer but it'll fail before long too. If you have API's, fuck it, just shoot rocks or old cars. Those bastards cut through 1" steel no problem. Again, you won't get any accuracy out of these but if you get a .50 I just happen to know you'll at least try APIT's out of it. Everyone does.
Don't start wildfires, I burned down all of Yakima Training Center with one Raufoss round, not even a tracer. The guy firing the AT4 started a second fire next to it and we never got it put out.
