First time ladder test

The pic is my load data.

Barrelnut said:

Found it. That's really cool. Wonder how they cam up with those numbers. I have never seen and truly verified data like that for temp sensitivity.

Click to expand...

They used their Doppler when bullet testing I assume. I did the work up for their bullet drag model. It's pretty darn good. A lot of work, but the first time my drops were on.

My cousin has worked with RL17 pretty extensively. He has said that the charge weight, bullet weight, and rifle make a difference in the powder stability. He noticed that in the 6.5x47 Lapua 17 was one temp variance. Then in his 300wsm the temp variance changed when shooting Berger 168 Hybrids. So you might be seeing the difference in caliber, bullet, charge weight etc.