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bgary

Temperature-stable powders?

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bgary   

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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MarkCO   

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

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highxj   

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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Kyle O   

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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Aaron M   

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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