Can anyone here point me toward pressure data on 4f? Been shooting it for years in a ROA (warranted safe with as much sporting grade BP as it can hold), quite vigorous load....apparently very high velocity. Particularly interested in .45Colt performance vs. 3f or 2f.....3f gives higher velocity/pressure than 2f, well documented, as well as burning cleaner....which naturally has me thinking "why not 4f?".....tried it in MY gun (you're on your own, pal), but am wondering what's going on inside......can confidently state CCI 350 magnum primer flattening is on par with Buffalo Bore max-SAA ammo.....