- Oct 21, 2013
- Monroe, Newhampshire
I have the hornady 4dof app and theres a load set in there where if you want you can chose a powder they have tested and it will adjust for velocity swings depending on the temp you input. According the them it has a temperature sensitivity factor of .79. H1000 and rl-22 both run about .5. Not sure how accurate those are but .79 doesnt seem that bad. I think retumbo was like .16 or something like that.Nothing notable.
I've seen non-scientific estimates of 1fps per degree but no information on what case density/ percent case full was used for the test.