In reviewing powder burn rate charts, the question that came to mind is, can one compare powder pressure curves (charting) the same way burn rates can be charted? For example, SR 7625 is a slower powder than Unique (though they are very close). Unique's safe working pressure with a 260 gr. Keith max's at about 10 grains. Could one extrapolate that 10 grs. of SR 7625 would provide a similar pressure curve using the same bullet??