I think it was SWThomas that used the HPH 12's in his Endeavor with the Barnes T-EZ bullet. I may have to get some of each sabotand see which one it likes best. I guess I could to a test fit at tht house and see how each sabot feels going down the barrel. That way I don't waste to many of those expensive Nosler's. I should be able to tell if on or the other is to loose or to tight. Maybe this will get me in the ball park.