Shot them for years. Accurate, devastating internally, doesn't leave a huge exit, but you will never find the bullet as it will be a pass thru every time in a whitetail so who knows on weight retention. 7mm08 140g. TSX
My granddaughter shoots the 80gr TTSX out of a 243, my daughter shoots 120gr TTSX out of a 7-08 and I shoot 140gr out of my 280AI we are very satisfied with the results.
I like them in .277. Deer, not so much. Don't expect explosive wound channels or huge exit wounds though. I like them because they stay together and don't inflict excessive meat damage to the shoulders
I've been shooting 168 TTSX in my 300 Mag. Shot several deer and they all dropped and flopped. Ranges from 45-125yds. My load is boringly accurate, I also use the 210 in my 338 RUM with similar results.
I've got 3 boxes on the way from Natchez Trace of Winchester Copper Impact 180gr. Hopefully before the end of deer season I can tell you how they do for another option if need be