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A reloading safety reminder
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freerider04
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September 1, 2014 - 6:23 pm
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I was shooting some of my 445sm loads yesterday and was reminded of something very important. Temperature sensitivity (I was using W296 in this case) 

Fired a dozen, all was fine. Took a short break then fired off the next 6. EXTREMELY difficult ejection and the flattest primers I've ever seen. 

I realized I had left my ammo in the sun, so it heated up very quickly. 

Excess pressure due to temp doesn't just happen when it's hot. Work up a load in cold weather and you may be fine. Shoot the same load when it warms up a little, you could be putting yourself in a bad spot. 

DW's are strong, but everything can fail. Some powders are more sensitive than others, but it's never a good idea to leave your ammo in the sun. Reduce your "cold weather" loads when it warms up and work them up from there. 

Hope is not a course of action

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zoommb
People's Republic of Illinois

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September 1, 2014 - 6:37 pm
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Great reminder. We all forget things from time to time, especially when it's familiar stuff. Glad there were no catastrophes.

-Mike

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Jody
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September 2, 2014 - 1:20 pm
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This is good information!  As a relative newbie to reloading I had never thought of this, thanks for sharing!

 
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Steve
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September 2, 2014 - 7:41 pm
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Jody said
This is good information!  As a relative newbie to reloading I had never thought of this, thanks for sharing!

I would never have considered the possibility of something like this.

One more reason that I surround myself with people smarter that me

And "people smarter than me" is pretty much ALL OF YOU!

I went to a bookstore and asked the saleswoman "Were is the Self Help Section?" She said if she told me, it would defeat the purpose.

George Carlin

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Bob
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September 3, 2014 - 3:41 pm
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I started reloading in 1991 and I've still have never given a thought to this.  You are never too old to learn something new.  Thank you for sharing this great piece of info.

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SCORPIO
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September 5, 2014 - 10:13 pm
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Boyle's Law (I think) says that pressure will vary directly with temperature.  So the hotter it gets, the higher the pressures.  

Anything worth doing is worth doing well.

My father

If a man designed it, and a man built it, then a man can fix it.

My grandfather

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