I am by no means a statistician, but I did have to learn a thing or two while being edumacated. In reloading, it would make sense that the principle of variance applies. A good example would be subsonic 300 blk compared to a faster rifle cartridge. The grain of powder is around 10 for a 220 gr projectile for subsonic 300 blk. If you compare this to, for example, 7 prc using a 175 gr projectile using around 65 gr of powder, you would expect the variance in velocities and therefore accuracy to be greater in the lower gr amount in the subsonic 300 blk. Is this a thing? If so, is the best way to control for this when shooting a lower grain cartridge to use a more accurate scale?
I think yes and yes.
You could prove this by looking in a reloading manual and seeing the speed difference is made by each powder increment listed. I guess I haven’t checked this specifically, but I’m sure you’re right.
In doing the test of scales, I was pretty surprised at how bad some were. Frequently off by as much as 0.3 when they list a precision of 0.1.
1 Like