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Bullseye powder temperature sensitivity

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Ed Hall
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Bullseye powder temperature sensitivity Empty Bullseye powder temperature sensitivity

Post by Otiso Fri Oct 17, 2014 9:21 pm

How sensitive is bullseye powder to temperature? Do any of you find a need to adjust for the colder weather?
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Post by Jon Eulette Fri Oct 17, 2014 11:10 pm

Out here in Southern Kalifornia I use and shoot BE powder using same charge year round from 40 ' s to 115 degrees. Don't notice any difference in functioning of pistol. I use same oil year round as well; FP-10. I'm always making sight adjustments, so I really couldn't tell you if group changed with temperature. 
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Post by Rob Kovach Sat Oct 18, 2014 1:16 am

Bullseye is somewhat sensitive, but not so much that you would need to change anything seasonally unless your gun was functioning marginally to begin with.

In the winter I would occasionally not get enough slide movement for the last round to lock the slide back....but it always runs good.
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Post by BE Mike Sat Oct 18, 2014 5:13 am

If you can find Alliant Bullseye load it up! There are much more crucial things to worry about in this game while on the road to success.
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Post by DavidR Sat Oct 18, 2014 8:00 am

never seen any problem with it from 40's up, now vitvihoutri v-310, is and you best add.2 if in 40's and back off .1 if over 90
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Post by Ed Hall Sat Oct 18, 2014 8:25 am

I've had similar results to DavidR.  BE has shown far less, if any sensitivity, than VV-N310.  The lube is really more of a factor in the cold.  Breakfree CLP seems to be good in all temps, but Red Oil gets really sluggish.

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Post by 45 MIKE Sat Oct 18, 2014 8:49 am

I do try to keep my ammo shaded in hot weather
and I don't see any problems.
But I do see function problems when the temps go
below 60 I need to use lighter oil in the 22 and 45
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Post by C.Perkins Sat Oct 18, 2014 9:36 am

I have used Bullseye, Clays and Solo 1000 out here in Arizona where it can be in the 40's to 115 degrees.
Found Solo 1000 to function pretty well in all temps.
Clays was the worst, when cold would up the charge a couple tenths and heat drop a couple.
Went back to my first powder choice, Bullseye.
Stays consistent for me through all temps.

Clarence
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Post by Jon Eulette Sat Oct 18, 2014 9:39 am

45 MIKE brings up a good point that I almost addressed. You don't want your ammo getting hot. It'll raise the pressure enough to shift your group up considerably. Back in around 1991 I was shooting ball match in San Diego.  The CMP was still issuing ammo at the matches. I was a young shooter and one of my distinguished experienced team mates came up and whispered to me that the ammo had been in the 100 plus degree heat in direct sunlight and that I better crank my sights down to compensate for it. GREAT advice! I won the leg match and Springfield Armory was giving $100 to the winner. So I always keep my ammo shaded as much as possible. 
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Post by LongSlide Sun Oct 19, 2014 1:06 pm

I've used Bullseye in temperatures right around 20 deg-F with 200gn SWC and 3.9gn BE, it did seem to lose a little recoil, but not enough to keep the gun from running.  I use a 19# mainspring and 14# recoil in the gun.  And I lube with FP-10, no grease.

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Post by TampaTim Sun Oct 19, 2014 8:11 pm

My limited experience has show that single based powders have bigger variations with temperature changes than double based powders.

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