Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets


Loaded rounds laying in sun

LinkBack Thread Tools Display Modes
Unread 07-23-2012, 04:55 PM
Junior Member
Join Date: Sep 2011
Posts: 4
Loaded rounds laying in sun

I made the mistake of laying my loaded rounds on the bench in the sunlight while I was hanging targets.

I didn't let them cool and shot them through the chrony and got velicities all over the place.

After I realized how hot (temperature) they were I let the remainder cool down in the shade...velocities were good after that.

The powder is H4831sc in a 6.5x284 Laupa case.

I will not make that mistake again.

Is H4831sc a temperature sensative powder?

Reply With Quote

Unread 07-23-2012, 05:01 PM
Platinum Member
Join Date: Mar 2012
Location: ND
Posts: 2,808
Re: Loaded rounds laying in sun

no, it is one of hodgdons extreme powders. Extreme Rifle Powders


I'm 18
"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
~George Washington

"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE Custom

Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/

Reply With Quote
Unread 07-23-2012, 05:07 PM
Bronze Member
Join Date: Jan 2011
Posts: 77
Re: Loaded rounds laying in sun

H4831sc is advertised as temp insensitive. I will admit I do drink some of the "kool-aid" regarding this claim but not really sure how valid it is. I use this powder in 3 rifles but mainly for the purpose of consistent FPS and very low ES.

Having said that, the claims are that it is tested up to a heat of around 101 degrees. Leaving those rounds out in the sun for even 15 minutes, I am willing to bet those cases are far hotter than that. I made the same mistake a while back and got some eradict velocities and groups. My cases were almost a bit hot to handle. I think you are all right and just remember to keep them in the shade.
Reply With Quote
Unread 07-23-2012, 05:56 PM
Platinum Member
Join Date: May 2012
Posts: 4,267
Re: Loaded rounds laying in sun

I've shot the temp. stabilized h4895 from below freezing to a hot summer day( in my 25wssm), and the change is 100 fps or so, or exactly what you would expect with any other powder. The rifle, cartridge case, and primer aren't temp. stabilized, why would you expect the same speeds if any of those are subject to temp. extremes. I've seen similar with other h powders, but this one stuck in my head. I go for what shoots well in both high and low temp ranges and don't try to trick the system. I am lucky here in N.D., I can wait a few days and get both extremes.
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: Loaded rounds laying in sun
Thread Thread Starter Forum Replies Last Post
7mm stw loaded rounds. nosler red tips chevellebbc Other Stuff For Sale 3 05-29-2012 06:00 PM
Large Lot Various 25-06 Brass & Loaded Rounds - First Reasonable Offer Takes IT (SPF) KY Gun Geek Other Stuff For Sale 3 12-23-2008 08:41 AM
where to keep or carry loaded rounds to keep ES and VEL changes down bigrich954rr Rifles, Bullets, Barrels & Ballistics 7 03-05-2007 06:48 AM
Leupold M1 3.5x10 and 60 Rounds of 300 wby and 40 rounds of 300 RUM HooterShooter Guns For Sale 13 02-27-2006 01:29 PM
plastic storage case for .30-378 loaded rounds? speed demon Rifles, Bullets, Barrels & Ballistics 5 03-14-2004 09:05 PM

All times are GMT -5. The time now is 09:17 PM.

All content ©2010-2015 Long Range Hunting, LLC