Temp sensitive powders?

[Gummi Bear]

Look at the Hodgdon Extreme powders, they are all about as temp stable as you can get.

^

This

I use H4895 and Varget in several calibers. There's always a recipe for them.



I went to the woods because I wished to live deliberately...

Henry David Thoreau

[Horitexan]

IMR 4451 is the substitute Hogdon recommends for H4350. Its part of the Enduron line and they claim it's just as good, and in SOME cases, even Bette,r than H4350! I can't say I've tried it as I'm a mid-level hoarder and I've managed to maintain a decent back stock of H4350; but I will try it at some point and I'd have no hesitation. It's just as insensitive as H4350.

I like my Reloader powders but I ONLY use them in loads that are designed for similar temperatures and NEVER a winter load in the summer. For a few hundred yards it may not make a difference but if you have to take a really long shot, I want a load that I know won't be jumpy do to temperature. With the crazy temperature swings we get these days, I prefer the H4350 because I can have a hot and a cold load recipe and one of them will be darn near perfect for any temp Mother Nature throws at me. Just my preference.

[stxhunter]

IMR 4451 and RL 16 are good temp stable powders and will work well in the 260.

Personally I switched over to RL 26 in my 260 AI and have seen increased velocities, lower ES/SD, with the same pressures. I'm not sure that I'd really call it temp sensitive, loosing roughly 0.1fps/degree below 80 and almost unnoticeable change up to 96ish.