Could anyone advise the ideal rpm range for the Hornady .224 VMax in 55gr? I am about to rebarrel a .222AI and use this pill exclusively. Currently using a 1/14 at 3450fps and thinking of changing to 1/12. The 1/14 equals 177K rpm and the 1/12 would give me 207K rpm at the same velocity. I seem to recall reading that the ideal rpm is around 200K rpm???