Testing Powder Temperature Sensitivities

[bruddah]

Has anyone here done this?

I read that you can do this yourself by going out on a hot day and using ammo that has been sitting in the sun, sitting in the shade, sitting in a cooler with ice, and then chronographing (sp?) the different velocities.

Anyone ever done this with different powders to see which powders actually hold up to their claims?

I see a lot of claims out there by powder companies. (8208XBR and Varget come to mind). It'd be nice to know which ones actually hold true.

 

[BuzzBoss915]

This is one area where you might be wasting your time? BB

 

[Rob01]

Never did any long drawn out testing like that but have tested them in actual shooting in hot and cold temps and Varget varies about 10fps from teens to over 100. Other Hodgdon Extreme powders like H1000 and H4350 are also very close to this but vary a little more in the 15-20fps range for those temp ranges.

 

[Rprecision]

Never did any long drawn out testing like that but have tested them in actual shooting in hot and cold temps and Varget varies about 10fps from teens to over 100. Other Hodgdon Extreme powders like H1000 and H4350 are also very close to this but vary a little more in the 15-20fps range for those temp ranges.

My Field expirences with Varget, H4895 and H1000 has been the same.

I have always wondered what the results of a independent test would be

 

[Clark]

SH was the place to read about it, but SH posts are only available to ~~ 2 years.
The guy who replicated Hodgdon's and Aliant's claims, kombayotch, has some posts about it on Canadian gun nutz, but you have to join to view them.

I can still find this one:
http://www.snipershide.com/shooting...p-test-ar-comp-vs-varget-308-win-223-rem.html

 

[Skyking]

I have also found Hodgdon Extreme powders are good, H1000 Retumbo, The reloader powders have the problems

I found this

Using Temperature Stable Powder - YouTube

 

[bruddah]

SH was the place to read about it, but SH posts are only available to ~~ 2 years.
The guy who replicated Hodgdon's and Aliant's claims, kombayotch, has some posts about it on Canadian gun nutz, but you have to join to view them.

I can still find this one:
http://www.snipershide.com/shooting...p-test-ar-comp-vs-varget-308-win-223-rem.html

That was a good read!

 

[bruddah]

I have also found Hodgdon Extreme powders are good, H1000 Retumbo, The reloader powders have the problems

I found this

Using Temperature Stable Powder - YouTube

Excellent video! Thanks for sharing!

Anybody know of any tests with IMR 8208 XBR?