Quote Originally Posted by SA Friday View Post
Just an FYI, but all of the sheets on that Excel spreadsheet were attached also. I'm not sure if you meant to do that or not.

On the rifle loads, are those loads you concluded were accurate out of the respective rifles? If so, what size groups were you typically seeing with each? I'm interested because there is is an obvious velocity difference between the bullet types even with same weights. I find this interesting. I've always held the premise that every bullet/powder/rifle combos need to be treated as an individual set of conditions and have to be tested to find their optimum conditions. If the 300 WM data is all from the same gun, the velocity differences (and standard deviations) between the 180 gr bullets are interestingly spread apart.

The 185 Berger (hunting bullet?) averaged 2891 fps and between the three powders has a standard deviation of 13.5.

The 180 Nosler (Partition?) averaged 2950 fps and between the three powders a SD of 48.5.

The 180 SGMK (Sierra Gameking?) averaged 2927 fps and SD of 38.6.

Just based on the SD numbers, I would suspect you are seeing the best accuracy out of the Bergers and the least out of the Noslers. But neither the Nosler nor the SGMK are even close to the consistancy of the Bergers. Does this ring true?
Assuming you looked at the figures on tab [WEBLoads], I'm curious how you calculated Standard Deviation. Excel gave me different numbers than what you have. In any case, it's useless data, as each shot has a difference amount and type of powder.