Submitted for those of you that may be of interest. OK..here's the data.... 140 grain SMK RP neck sized brass Federal 210M primers Temp. - 35 degrees 65.0 gr. - 2950 fps 66.0 gr. - 3014 fps 67.0 gr. - 3030 fps 68.0 gr. - 3053 fps 69.0 gr. - 3048 fps 70.0 gr. - 3091 fps 71.0 gr. - 3147 fps 72.0 gr. - 3136 fps 73.0 gr. - 3169 fps 74.0 gr. - 3205 fps 75.0 gr. - 3218 fps 76.0 gr. - 3242 fps 77.0 gr. - 3269 fps compressed charge I like how the powder gives low increases of velocity between 1 grain charges. That tells me that small deviations in powder charges will have little effect on velocity and should return a nice low standard deviation. Also, the case can be jam packed with the stuff and it won't blow your rifle up and still gives very good velocity. There are other powders that will drive a 140 grain pill faster, but accuracy kills far better than speed. Overall, I feel that H50BMG is a very good powder in magnum cases and is very overlooked as a viable powder to use in this class of cartridges. You may have noticed that at times greater charges returned lower velocities. It has been my experience that this does happen from time to time, most likely a result of case wear and preparation. My cases are not prepared to BR standards.