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#180906 - 05/17/17 02:30 PM Temp. Powder sensitivity chart
dogknott
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Registered: 03/05/14
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Is there a chart out there that lists powder temp sensitivity?
I mostly load .357 and 44mag, have used 296, LilGun, 2400, VV-N110, and 1 of the 4227 powders. contrary to what i have read, the VV-N110 does not fair well at zero degree weather...

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#180907 - 05/17/17 02:44 PM Re: Temp. Powder sensitivity chart [Re: dogknott]
karl
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Registered: 01/12/15
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That would be interesting to see. I've been using a lot of RL-7, but recently did some winter shooting. Loads that gave me 1825 fps in a 45-70 in 70-80 degree weather gave me ~1600 fps at 5 degrees. I was expecting some change, but not that much!

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#180908 - 05/17/17 04:01 PM Re: Temp. Powder sensitivity chart [Re: karl]
Andre
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Blue Dot/cold weather/41 Mag combo is so bad its no longer even recommended for the 41 Mag ?

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#180910 - 05/17/17 08:15 PM Re: Temp. Powder sensitivity chart [Re: Andre]
TN Lone Wolf
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Registered: 09/20/13
Posts: 3524
Loc: Martin, Tennessee

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That would be a pretty neat chart if someone made one.

From personal experience, IMR 4064 is somewhat sensitive. The same load in my 243 Encore gave me 3114 fps at a temperature of ~30 degrees, but a velocity of 3206 at ~85 degrees. I also once had an H110 load in my 460 that allowed the cases to extract easily in the winter but get stuck during the summer.
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#180913 - 05/17/17 10:11 PM Re: Temp. Powder sensitivity chart [Re: TN Lone Wolf]
H2OBUG
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I find if you work your loads up with magnum primers that it reduces the effects of powder position and temperature.

I like to use powders that have 80% + density.

I will say 2400 has always been my go to powder. you can load it up or down across a wide range of bullet weights and charges.
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If it jams force it! If it breaks it needed replacing anyway.

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#180915 - 05/18/17 09:21 AM Re: Temp. Powder sensitivity chart [Re: H2OBUG]
cherokeetracker
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Registered: 11/27/15
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I have found similar to what H2OBUG speaks of. In the heat here in Texas I have found that with Ball powders it is best to drop at least 2 grs in the hotter days of summer shooting. Either that, or go to a target load. Rifles or Pistols. I use a mag primer with 2400 a lot. Many will tell you that is not needed but it seems to work.
Longshot is a powder that was not designed for pistols, but works in certain calibers and loads. The Powder is not supposed to be sensitive to the cold. But now just how cold I do not know. It has been since the mid 90s when we designed the powder.
This was discussed that the powder not be sensitive to cold since it was going to be used on Pheasants in Kansa and Nebraska in Winter. Sounds like I need to make a phone call.
As far as a target load,,, (WST) Winchester Super Target has proven to give better results than W231 in the 38 and 45 ACP. Event the SASS cowboys use it in their loads. I know this does not help for hunting.
Some folks will stay at home when the mercury drops. But for those who can do it and want to,, this is just another excuse to go shooting when it is freezing out there.
We used to have a shoot on New Years Day in the morning. It was over well before noon. It was called the "Hangover shoot". There were some years it really did test you and your loads.


Edited by cherokeetracker (05/19/17 10:20 AM)

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#180916 - 05/18/17 09:23 AM Re: Temp. Powder sensitivity chart [Re: karl]
cherokeetracker
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Registered: 11/27/15
Posts: 132

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 Originally Posted By: karl
That would be interesting to see. I've been using a lot of RL-7, but recently did some winter shooting. Loads that gave me 1825 fps in a 45-70 in 70-80 degree weather gave me ~1600 fps at 5 degrees. I was expecting some change, but not that much!


Thanks Karl I will remember this for the 30-30 since I do have some loads and the Weather in South Carolina can get colder than it normaly does here in Texas.

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#180917 - 05/18/17 09:27 AM Re: Temp. Powder sensitivity chart [Re: cherokeetracker]
karl
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Registered: 01/12/15
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Loc: Minnesota

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 Originally Posted By: cherokeetracker
I will remember this for the 30-30 since I do have some loads and the Weather in South Carolina can get colder than it normaly does here in Texas.


I shoot a lot of it in 30-30 too and will test the next time i can when it gets cold again In the mean time, I'm looking at the newer AR-Comp as an alternative as it was suggested by QuickLoads and is suppose to be more temp stable.

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