Thread: Reloder 22 - how temperature sensitive is it?

Just wondering if those who use this powder have noticed any significant changes in pressure and point of impact, especially when hunting in New Zealands climate.

I have read that it is sensitive to temp changes but I think here in NZ it wouldn't quite as bad as in the USA as they get higher variations in the Hot and Cold.

When I lived in the US (Missouri), I had a good load in my .300 Win Mag with 208 A-Max using RE22. I shot a .6 MOA group at 300 yards in 26C in the summer and verified drops to 400, 500 and 600. The next winter I shot a group at 600 yards on a friend’s farm at -2C. The winter group had 19 inches more drop at 600 yards than the summer one.

I switched to H1000 (2217) after that as it has a reputation for being less temp sensitive. I have never carried out the same test so can’t compare, but I’m sure 2217 is less sensitive than RE22.

Temps in the US ran from +42 to -23, so more of a range than here, but temp sensitivity is still worth thinking about.

I use it in my .270 behind a 140. No change in impact between 10 and 35c noted so far out to 300.


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I bought a bottle for load development in my 7mm mag I found it left the barrel dirty also variations in speeds on hot to cold days poi also moved up to 2'' some days although if it were more stable it probably would be a fair powder I could get good groups but the same load on a cold day would open up substantially , For me I find the ADI powders most stable over here

Originally Posted by 6.5mm-mag

Just wondering if those who use this powder have noticed any significant changes in pressure and point of impact, especially when hunting in New Zealands climate.

I have a couple of bottles FS if you are after any

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I maybe keen on that if O.P. isn't.
How much and where?

From what I have read on US based forums Reloader 22 appears to be more temp sensitive in some cartridges than others. I use Rel 22 in two 25-06s and have seen very little velocity difference but I only tend to shoot at temps from 2°C to 24°C. In those two rifles it is very accurate out to 400m. Velocities were tested with a LabRadar.

Originally Posted by widerange

I maybe keen on that if O.P. isn't.
How much and where?

Pm sent

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Hi, thanks for the feedback guys. Just bought a pound of Reloder 23 to try in my .280 AI, will pass on the Reloder 22 thanks.