IMR 4064

[markm]

I’ve used quite a few different powders in .223, but never had any desire to try 4064.

Which is good. Because it's not the best pick. I like to play with options though in case my favorites are hard to find.

[BobinNC]

Can someone post any links to documented IMR4350 temperature stability?


I have been shooting a bit of it and I feel like I notice my DOPE change even when its a 10-15* difference.

It's getting to the point where I want a different powder. Anyone know if BLC2 or Staball 6.5 is actually stable? I just want predictable dope. I need to know my misses are marksmanship.

Here you go.

Temp stability.jpg

[RedTeam98]

IMR 4064 most excellent in temps.
That’s the reason the Military used it in the 7.62 changing from Reloader 15 in sniper Ammo.
My choice for my 308 Win with 168gr and 175gr for years.
Federal Gold Medal Match used by law enforcement 168MK/175MK uses IMR 4064 it’s the gold standard 42.8 and 41.8 Fed 210M in FC cases. This is a 7.62 level load low node for military and not a 308 win high node load like my 44.5 with 168/175 MK. The Newer M118LR is basically the Gold Medal Match low node load but with FC gov spec military brass.
All powder are effected by Temp extremes regardless of manufacture says. They have attempted to improve the powders over the years with the new IMR, Hodgdon and Alliant Reloader powders. Tested they will all have Vel deviations.
It appears Single based powders are less effected than Double Based powders by temps but all are effected.
Varget is another great powder in my 308 Win that is very popular on my shelf.
I am really fond of IMR 8208 in my 5.56 with 77MK and works extremely well in the 308 Win with 130gr TTSX for deer. A great choice for a sensitive or young hunter for deer.
Alliant Reloader new 15.5 is its attempt to correct the temps problem in Afghanistan with Reloader 15 in 7.62 M118LR. Proably another good powder to add to the list…….but I have yet seen it on the shelf.