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I was kinda wondering the same thing. Building a 5.56 upper and starting to think about developing a load for it. Was hoping to use Varget (I read it works well with the heavier bullets) but everybody seems to be out of it. Not a good sign. Don't want to develop a pet load on this powder if the supply is going to be so unpredictable...
 

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Reloader said:
...Also the military, at least the scuttlebutt I heard, was going to start using Reloader 15 for their heavier bullets.
Now that could get really interesting considering RL15 is a very temperature sensitive powder. Take some of that to the sandbox and things could get dicey real quick!
 

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nonnieselman said:
Everywhere ive looked i havent been able to find anyone that has varget instock..
Whats the deal?
Where have you looked?
 

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In reply to the poster who said Reloader 15 was a very temperature sensitive powder...I wasn't quite sure how to respond, or even if I should,.....all powder is somewhat temperature sensitive and will burn if exposed to extremely high temperatures....that is what is called a cook off. If you are referring to Iraq or such as the sandbox, I don't think anyone would carry reloads over there....but here is message off of Alliant powder company about Reloader 15.

You are perfectly safe using this with heavy 5.56 or .223 ammo.

The best all-around medium speed rifle powder. It provides excellent .223 and .308 caliber performance. Selected as the powder for U.S. Military's M118 special ball long range sniper round.
 

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Temperature sensitivity isn't about a safety hazard.

Powders that are temperature sensitive produce varying velocity depending on the temperature. This in turn affects your zero.

An increase in temperature can increase velocity which can cause your rifle to shoot higher and a decrease in temperature can decrease velocity and cause your rifle to shoot low.

At the all-army championships the AMU guys put out that you have to adjust 1 moa per 20 degree change in temperature with the black hills ammo.

Now varget is supposed to be very insensitive to changes in temperature but it is quite a bit dirtier than RL-15.
 
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