Originally Posted by westcliffe01
You increased both temperature and altitude, each which make the air less dense and thereby increases stability. The reason I put in 20F and 0ft initially is that is a pretty tough case for stability with cold dense air. Like what we have in the midwest in winter.... Here we have to be careful developing loads in summer which may not work out at all in winter...
Ah, I see what you were getting at. So even under very tough conditions this bullet should be stabilizing in this barrel. 8000' and 70 degrees were the actual conditions so it should have been even easier to get the bullet stable.
Impact holes are oriented different from each other and they would have impacted at least 3 feet apart. Seems odd given the group from the 150's.
Are there any other variables to consider?