The way I look at is a conventional o ring press has enough slop in the shell holder and get rid of spring clip and add rubber o ring and gain more and if your press needs more than that you need a new press. Add rubber o ring under die and it will allow for some tilt for case not to fight die, coax does not tilt die at all, as long as all surfaces are aligned your fine but a little off not so good. On regular press your bullet sits right on center of ram not on a platform away from the Rams, we know on solid c frame presses that they flex and they are solid one piece, idk but just basic physics?