I've shot a half-dozen bulls using the TSX BT (untipped version) in .270, 7mm, and .308 versions. Two weeks ago, I recovered my first such bullet, a 7mm 150 grain fired from a 7x61 at a distance of 200 yards. Bullet still weighed 150 grains, all four unbroken petals peeled back uniformly and the bullet expanded to .60 caliber.
The tipped bullets are supposed to expand more reliably than the TSX, and that may very well be true, but I have no complaints with the original version. Regardless, you've likely made a very good choice.
