That sound good . I sort of thought they might blow apart @ higher speeds . I have been using serria 225 gr. gamekings in my 7600, they shoot good but , wanted to try something a little different . Tried the Hornady 180gr. ss/pb and the 225 Nos. BT . The 180gr. didnt shoot that good and the 225 bt's were to long. Thats what so great about rolling your own ,trying new things. OH YEA I know you know, but got to say it anyway BE CAREFULL .