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Temperature-sensitive powders?
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 Posted: Fri Apr 3rd, 2009 01:45 AM
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Gnarly
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Strange question time:

Where would I find a list of the modern powders LEAST sensitive to temperature?

Have been getting good results with Reloders 15,17,19 but then found out RL 15 was "temp-stabilized" and others were not so stable/consistent at temperature extremes....

Not sure where to look,so figured I'd ask you all.

Thanx!

----Gnarly :troll:

 

 

 



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 Posted: Fri Apr 3rd, 2009 04:50 PM
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crazy2medic
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Most likely place is the powder manufacturers themselves, I use hogdons powders mostly, benchmark my prefered powder, I know BLC-2 Is NOT temperature stabilized



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 Posted: Fri Apr 3rd, 2009 09:41 PM
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miestro_jerry
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Way back in the late 60s, I trained in Alaska and came across some Canadian Forces that were winter training. Whatever powder they used in their FALs, is the powder I want to use. It was very cold out and the M16 rifles didn't like the cold at all, differential metal contractions was the problem. The 5.56 GI ammo was a little unpredictable for zeroing.

Jerry



 Posted: Mon Apr 6th, 2009 12:34 AM
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8x57mm
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A general rule of thumb is that extruded powders are less sensitive to temp than ball, flake, or even smaller grained extruded. You're right about Reloader15, and winter hunters like IMR4064, which cares little about temperature.



JR



 Posted: Mon Apr 6th, 2009 01:26 AM
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Gnarly
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Grateful for the input,ya'll!

I have some friends way down South that can use the most temp-sensitive ones I've collected.

Don't want to tie up storage space with finicky powders.A friend who has the QuickLoad program emailed me that there was some kind of 'compensator' that suggested adding one-to two tenths gr extra powder for cold conditions,which is no big deal....all my handloads (except one pistol load) are below max enough to 'compensate'.

Reason I brought this up: hunt in temps down to ~zero,but do most load workup  in temps ranging from 30F to 95F.And try to put in triggertime under a wide variety of weather conditions.

Thanx!

----Gnarly :troll:

 

 



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 Posted: Mon Apr 6th, 2009 02:14 AM
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Rockydog
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Gnarly, Check out the Hodgdon Powders they label some of them as "Extreme" powder meaning they are temp. insensitive. I've used them in WI. from 90* to about -10*. Never had a problem. RD



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 Posted: Mon Apr 6th, 2009 02:36 AM
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Gnarly
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Thanx!

Shoulda done my research on that.

Got Reloders 15,17,19,22.

Got IMR ,4831,4007SSC & 7828SSC.

Got H4895,4831,4350(which,by the way,shoots LOUSY in everything I load for!).

Got Varget.

And my favorite all-around powder: Win760.

But nothing labeled 'Extreme.'

Will hafta do some trading around!

----Gnarly :troll:



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 Posted: Mon Apr 6th, 2009 03:01 AM
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Rockydog
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Gnarly, I've had my challenges with H4350 also. I use 4831 in my 270. It shoots everything I put on top of it well. Doesn't seem to matter what manufacturer or what weight bullet. Best groups were sub 1" at 200 yds. RD



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 Posted: Mon Apr 6th, 2009 03:21 AM
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8x57mm
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R15 and 4064 cover just about everything in medium calibers, but 4350 works well in my 8x57mm. It does so only with max loads of heavy (200-220 gr) bullets. There it is pretty good. It was the original full-on military 30'06 powder during WWII, so I suppose in 30'06 with heavy bullets it works well too.

Again, 4064 doesn't care about how cold it is.



JR

Last edited on Mon Apr 6th, 2009 03:23 AM by 8x57mm



 Posted: Wed Apr 22nd, 2009 07:38 AM
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416RigbyHunter
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Gnarly wrote: Strange question time:

Where would I find a list of the modern powders LEAST sensitive to temperature?

Have been getting good results with Reloders 15,17,19 but then found out RL 15 was "temp-stabilized" and others were not so stable/consistent at temperature extremes....

Not sure where to look,so figured I'd ask you all.

Thanx!

----Gnarly :troll:

 

 

  Gnarly,
All of Hodgdons 'Extreme' line of powder are temperature stable, they're made here in DownUnder by ADI.
H4227.
H4198.
Benchmark.
H4895.
Varget.
H4350.
H4831sc.
H1000.
Retumbo.
H50BMG.
All come under the 'Extreme' line.
I wouldn't consider Alliant powder to be temp stable, as I have had issues with RE15, RE19, RE22 and RE25 with hot temps.
Cheers.
416RigbyHunter.



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 Posted: Sat Apr 10th, 2010 10:10 PM
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RiverRider
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The Hodgdon "Extreme" line includes H322 and they are all temperature tolerant. All of Ramshot's offerings are temperature tolerant. Other temperature tolerant powders include the new IMR 8208, Re15, and Re17.

Re 19 and especially Re22 are quite sensitive to temperature and can lose several hundred feet per second in low temps, depending on the cartridge.



 Posted: Sat Apr 10th, 2010 10:16 PM
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Gnarly
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Thanx!

----Gnarly :troll:



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 Posted: Sun Apr 11th, 2010 12:58 PM
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kscchtrainer
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Another Hodgdon powder that is extremely temperature insensitive is Varget (short for Varmint and Target).

Loads using Varget normally don't vary much from below freezing to desert heat conditions in either pressure or velocity.

Now, just try and find some at a dealer -   I got lucky and grabbed an 8 pound jug just before the shortage hit!

:sofa:

Last edited on Sun Apr 11th, 2010 12:58 PM by kscchtrainer



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 Posted: Mon Apr 12th, 2010 02:23 PM
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Bigdog57
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Yep, I had hoped to get an 8-pounder of Varget but missed my chance.  So I have pretty much gone over to TAC from Ramshot.  Covers the majority of my rifle calibers and meters very well.  Ramshot seemed to be ignored in the Great Component Shortage of 2009.  :thumbs:



 Posted: Tue Apr 13th, 2010 05:04 PM
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Paul B
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8x57mm wrote: R15 and 4064 cover just about everything in medium calibers, but 4350 works well in my 8x57mm. It does so only with max loads of heavy (200-220 gr) bullets. There it is pretty good. It was the original full-on military 30'06 powder during WWII, so I suppose in 30'06 with heavy bullets it works well too.

Again, 4064 doesn't care about how cold it is.



JR


I have to disagree. While 4350 is a good powder for use in the 30-06, it is too slow burning for use in the m-1 Garand. I believe 4895 was the powder for the M-1 based on research I've done on that particular powder. I can trace the history for all the IMR powder EXCEPT 4895. :confused: Most of the IMR powders came out around 1937 IIRC. No mention of 4895, not in Phil Sharpe's book COMPLETE GUIDE TO HANDLOADING, nor in Earl Naramore's book PRINCIPLES AND PRACTICE OF RELOADING AMMUNITION.

The first mention of 4895 that I could find was in early post war issues of the American Rifleman where they have an ad stating that milsurp powder #4895 was being sold by the DCM. Burning rates varied from as fast as 4198 to as slow as 4064 and they supplied the data for the various lots. Hodgden bought most of it up and blended it into one burning rate which as the time was slightly slower than commercial IMR-4895 which came on the market. Load data in various manual varided widely and is now dangerous. In one Lyman manual, #43, the starting load as changed to the max load in #44.

FWIW, I bought 800 rounds of 1943 and 1944 30-06 ammo back around 1966 for six cents a round. I didn't want to mess with the corrosive priming so I pulled all the bullets and salvaged the powder. I weighed ever tenth charge and took the average to be a proper load. Anyway, looking at the powder it had to be 4895. later, I bought freshly made 4895 and could use the same charge in that milsurp brass. Today's version is much faster burning than when DuPont made it. Dunno why, but I can't use my old data anymore. My load was halfway between Lyman's max and min data and today in the same rifle I I used to work the load up in, it blows primers. Something radically wrong there. :confused:

Paul B.



 Posted: Sat Apr 17th, 2010 05:16 PM
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DaBarr
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The worst that I have ran accross is Accurate 2460.  It gets to be hot weather and you could be shopping for a new shooter.  I was using Accurate's reloading data for 22-250.



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