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Cold weather Chronograph results.

 
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  #8  
Old 12-20-2012, 05:32 AM
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Re: Cold weather Chronograph results.

IMR 4831 is not advertised as being an extreme extruded.
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  #9  
Old 12-20-2012, 06:30 AM
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Re: Cold weather Chronograph results.

It is pretty easy for anyone to check their loads . And rifle. Put the ammo and rifle in your deep freezer for a couple hours, Set your chronograph up then grab the rifle and ammo and go chronograph it. That is provided you have your freezer real close to where you can shoot. Where I am I have to put the rifle and ammo outside but keep the chrony by the wood stove. , I get the rifle all set up then take the chrony outside, set it, turn it on and commence fire. At -40 I can get at least a 3 shot string before the chrony freezes up.
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  #10  
Old 12-20-2012, 08:33 AM
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Re: Cold weather Chronograph results.

Quote:
Originally Posted by Tumbleweed View Post
FWIW, this is the reason I switched to Hodgdon's extreme powders a few years ago. They are probably the most consistent powders when exposed to large temp swings like what you are talking about. I have been very pleased with H1000 and don't see myself changing powders again, very consistent.
Varget is one of the extreme powders.

Extreme Rifle Powders
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  #11  
Old 12-20-2012, 06:27 PM
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Re: Cold weather Chronograph results.

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Originally Posted by FEENIX View Post
Varget is one of the extreme powders.

Extreme Rifle Powders
Thanks for pointing that out Feenix! I didn't realize that was an extreme powder. I am surprised that the OP is having such high temp swings then
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  #12  
Old 12-20-2012, 07:33 PM
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Re: Cold weather Chronograph results.

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Originally Posted by Tumbleweed View Post
Thanks for pointing that out Feenix! I didn't realize that was an extreme powder. I am surprised that the OP is having such high temp swings then
Let's face it, -40 F is beyond extreme cold, that's just flat out non-titillating cold.

IIRC, the test for the extreme powders were 0 to 125 F (???).

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  #13  
Old 12-20-2012, 07:56 PM
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Re: Cold weather Chronograph results.

I heard somewhere that once you get to these sorts of low temps that a hotter primer might help. I believe Winchester makes the hottest primers. Would be interesting to see if a Winchester WLR or even a WLRM primer helped.
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  #14  
Old 12-21-2012, 03:26 AM
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Re: Cold weather Chronograph results.

Ya a hotter primer may help. And 40 below is cold
But it feels warm compared to 60 below which is real cold until it gets colder and starts blowing. As I type this it's 40 below at my house. And it really doesn't feel that cold. There are Lots of people who hunt up here in the cold.
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