Looking in my notes, 7mm TCU clocked 1855 fps from my 10" barrel for 1146 ft lbs shooting a 150 grain Sierra match king. I shot this pistol in IHMSA competition and it put down the steel well, but it's a bit of a light weight for deer hunting. I'd reckon the 7x30 Waters could perform a might better. My .30-30 (same case) pushes a 150 Nosler BT to 2029 fps/1371 ft lbs from a 12" compensated hunter barrel. It pushes just shy of 1000 ft lbs at 200 yards. However, from a super 14, the 7 TCU might a bit better, but I doubt it can keep up with a 7x30 given equal barrel length.
I never had bad luck with 7 TCU case life, but you do split a neck now and then necking up the .223. I found out right quick that military brass wasn't the answer, crumpled MOST cases. You might could neck up in stages, like 6mm first, then 7mm, but necking up from .223 straight to 7mm with military brass is problematic.
I've had this barrel in 7 TCU for a while now and didn't shoot IHMSA too long before I bored of it. I'd thought of scoping it for hunting, but frankly, my .30-30 barrel is a better choice and it ain't broke, so why fix it? I've only taken five deer with it, longest to 90 yards, but it kills like lightening and has good range for a pistol. I would expect that the 7x30 Waters would be of similar power and might even carry a little more down at 200 yards being the BCs of 7mm bullets are higher than equal weight .30 caliber.
Anyway, my advice would be forego the 7TCU for the Waters. It will save you the hassle of necking up and fire forming brass and it'll outperform the TCU. The TCU IS a VERY accurate cartridge, but it's best left to the steel games with serious competitors IMHO.
