bgary Posted March 10, 2011 Share Posted March 10, 2011 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 Link to comment Share on other sites More sharing options...
Corey Posted March 10, 2011 Share Posted March 10, 2011 I think IMR 8208XBR powder is supposed to be pretty stable in most weather conditions. Link to comment Share on other sites More sharing options...
MarkCO Posted March 10, 2011 Share Posted March 10, 2011 .260 and .308...H4831SC. Playing with Hunter, but need some heat, showing promise. Link to comment Share on other sites More sharing options...
Powder Finger Posted March 10, 2011 Share Posted March 10, 2011 New powder that should fit those cases http://bulletin.accurateshooter.com/2011/03/new-ar-comp-powder-from-alliant-details-revealed/ Link to comment Share on other sites More sharing options...
highxj Posted March 11, 2011 Share Posted March 11, 2011 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... Link to comment Share on other sites More sharing options...
caz41 Posted March 12, 2011 Share Posted March 12, 2011 New powder that should fit those cases http://bulletin.accurateshooter.com/2011/03/new-ar-comp-powder-from-alliant-details-revealed/ That looks like it will be worthy of a test run when it hits the shelves. Link to comment Share on other sites More sharing options...
JOHNNYGLOCK Posted March 13, 2011 Share Posted March 13, 2011 New powder that should fit those cases http://bulletin.accu...tails-revealed/ Sounds like Varget to me! Link to comment Share on other sites More sharing options...
Kyle O Posted March 13, 2011 Share Posted March 13, 2011 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. Link to comment Share on other sites More sharing options...
DinosaurMikeGolf Posted March 18, 2011 Share Posted March 18, 2011 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. Link to comment Share on other sites More sharing options...
Aaron M Posted April 1, 2011 Share Posted April 1, 2011 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. Link to comment Share on other sites More sharing options...
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