MagPro temp question

[UCzO___]

I have a load I worked up @75⁰'ish F. I have heard a lot of negative things about this powders temp sensitivity. My question is is it in both directions, hot & cold? I have developed a problem with the rifle I have been planning to take to MT on my first Elk hunt and don't have much spare time to work up a new load. It is far from top end load, in fact it is pretty mediocre, but it shoots lights out and has enough energy at the ranges I expect to be shooting.

Thanks in advance for any help!

 

[SnakeRiverEric]

Yes, use 1 fps per 1 degree temp up or down.

 

[xsn10s]

That's what I've read also. 1 fps per 1 degree. One person used 1.5 fps per 1 degree.

FPS velocity change per degree on various powders

There was a post on the Hide when it was on Scout.com regarding change in velocity per degree temperature change. www.scout.com/military/snipers-hide/forums/5514-bolt-action-rifles/13858015-temp-sensitivity-data-for-most-common-powders-fps-deg?s I found this mentioned on Accurate Shooter.com...

www.snipershide.com