Like I said I have used them for years and have seen some mighty bad damage caused by them.Just don't really see the need anymore.A regular 7 mm Hornady is going to put a hole the size of a golf ball through a deers backbone just as well as the BT at half the price .That's really when I switched They came out with the " New and Improved BTs " paid more and got half of the amount of bullets.Didn't see any difference.

R.P. Can't find the interlock around here any more (Without the cannalure)