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Temperature-stable powders?

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#1 bgary


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Posted 10 March 2011 - 01:52 PM

I'm looking to simplify some of my dope, and one of the things that would make things simpler is if I didn't have to care about velocity changes due to temperature at, say, between 40F and 80F.

I know that some of the Hodgdon and VV powders are remarkably consistent within those kinds of temps.

What others?

Especially interested in powders suitable for .223, .260 and .308
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#2 Corey


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Posted 10 March 2011 - 02:03 PM

I think IMR 8208XBR powder is supposed to be pretty stable in most weather conditions.

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#3 MarkCO


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Posted 10 March 2011 - 02:04 PM

.260 and .308...H4831SC. Playing with Hunter, but need some heat, showing promise.


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#4 Powder Finger

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Posted 10 March 2011 - 02:20 PM

New powder that should fit those cases

#5 highxj


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Posted 11 March 2011 - 07:22 AM

Ramshot Big Game is very good in that regard according to my data, I'd expect the others to do good as well. Unusual for ball powders, and a nice characteristic...
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#6 caz41


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Posted 11 March 2011 - 09:29 PM

New powder that should fit those cases

That looks like it will be worthy of a test run when it hits the shelves.
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Posted 13 March 2011 - 11:31 AM

New powder that should fit those cases

Sounds like Varget to me!

#8 Kyle O

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Posted 13 March 2011 - 04:36 PM

I loaded some .223 with varget other day, and left them in the truck while at work, it was maybe 80F or so in there when I left. Strait to the range, found a good zero at 250 yards, packed it up.

Showed up at match this weekend, and I had left the ammo in the truck at the hotel, I usually bring it up to the room, but said screw it this time. Temp got down to fortysomething that night, I noted how cold the ammo was when loading my mags that morning.

First stage, targets around 180 yards. I was aiming 6 o'clock, and couldn't find a hit for the first 10 shots or so. I was sweeping left, and right, but when I moved high, I got a hit, cleaned the rest of them, and figure the temp variation was the only varible. Later that day we had a long range stage, so I loaded up some black p-mags, and put them on the dash in the sunshine, until the ammo was very warm and toasty. Shot that stage without a hitch, impacts were normal. So, there appears to be some variation with the varget, it's not the perfect stable powder I thought it was. YMMV.
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#9 DinosaurMikeGolf


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Posted 18 March 2011 - 11:31 AM

Try IMR 4895, which is the powder the US military specifies for .30-06 M2 Ball. H4895 has worked well for me here in Texas during the hot summers and cool winters.

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#10 Aaron M

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Posted 31 March 2011 - 08:10 PM

Look into the Extreme powders by Hodgdon they are all very good when it comes to temperature. Varget will work fine for all of the cartridges you listed above.

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