is reloader 19 temp. sensitive ?

seems to shoot pretty well in my 300wsm with 165 sst i did'nt know if the temp would affect it a hole lot.

I think Alliant's powders are temperature sensitive based on velocitys when using Rel19 and Rel 22 . I haven't run the same tests using Hodgdon powder which supposedly are not temperature sensitive. I have had great luck with H4350 and would hardily recommend that for a 300 wsm. Perfect powder IMHO