I have used the 80gr tipped TSX in a 243 Win on three deer this year,which were all one shot kills so no complaints from me . I did find the bullet in one buck which is very unusual for a barnes bullet , usually all of them are complete pass throughs . Anyway it was a perfect mushroom just like the pictures always show them . Personally I'm sold on Barnes bullets I've used them on deer ,elk , antelope and bear .