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Anybody know a temperature stable powder with a similar burn rate as Retumbo

 
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  #1  
Old 11-27-2012, 09:52 PM
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Anybody know a temperature stable powder with a similar burn rate as Retumbo

I have been using Retumbo with some pretty good accuracy, but I found it is inverse temperature sensitive. Velocity goes down as the temp goes up.

Any suggestions?
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  #2  
Old 11-28-2012, 09:41 AM
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Re: Anybody know a temperature stable powder with a similar burn rate as Retumbo

Yes, do an internet search for "smokeless powder burn rate chart", and you will get the answer to your question.

Burn Rate
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  #3  
Old 11-28-2012, 10:28 AM
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Re: Anybody know a temperature stable powder with a similar burn rate as Retumbo

I have the burn rate charts. I was wanting to know if anybody knew of a more temp stable powder
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Old 11-28-2012, 10:54 AM
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Re: Anybody know a temperature stable powder with a similar burn rate as Retumbo

Inverse, sounds crazy

You need to give more data.
Are you near 100% case fill?
What caliber?
What bullet?

Powders act differently in different situations, that is why there is so much discrepancy in burn rate charts!

Hodgdon Retumbo is supposed to be less temperature sensitive and they designate it as an Extreme Power, LOL.

edge.
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Old 11-28-2012, 12:16 PM
B23 B23 is offline
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Re: Anybody know a temperature stable powder with a similar burn rate as Retumbo

Edge is 100% correct.

I used to think the powder burn rate chart was non variable and etched in stone. After talking to Hodgdon some time back, I learned this wasn't the case at all. Hodgdon told me the chart was just kind of a general guide and that a powders burn rate was not a constant and the burn rate could change every time a new variable was introduced. He said many powders are close, sometimes, even very close but to never think you can substitute one powder for another based on the burn rate chart.
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  #6  
Old 11-28-2012, 12:23 PM
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Re: Anybody know a temperature stable powder with a similar burn rate as Retumbo

H1000 is very close
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  #7  
Old 11-28-2012, 12:26 PM
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Re: Anybody know a temperature stable powder with a similar burn rate as Retumbo

i know H1000 is supposed to be very insensitive to temp. i dont have any first hand experience with it tho.
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