My 1st run out of a minor clean was with AA2015, & printed a 5 shot 1/2" group. My second 5 shot group would have been in the 3's if it were not for one flier that made it a .6.......
3rd group was a .7 and the last 5 shot group would have been a .8 but a flier made it come in just under an inch.
This was using mixed WW brass with multiple unknown firings, & Federal AR match primers.
Varget and AR-Comp would do a .8, then a 1.2 etc and kind of be all over.
I have never seen a powder change make such a huge difference as this.
It was 80°+ and i started to see a bit of pressure at 24.0 grains with velocities around 3000+ fps.
When i get time i will go out and do the same run all over again and see if it is repeatable.