Jesus Christ the same yesterday, and to day, and for ever.
Our Lord Jesus said that as it was in the days of Noah and
also as it was in the days of Lot so it shall be in the days...
It's happening again!!! God sent to us His prophet, and His Word
to this generation and we once more are rejecting it as was prophesied!!! ---> As promised, God Sent His Prophet to us!
[QUOTE=specweldtom;170462]JECustom and I have both heard that the Reloader powders are very temperature sensitive. I have a good load in .280 Rem with Reloader 22. Should I be looking for another powder?
found this old thread about tempture sensitive powders and thought this might help fellow members out,this is from hodgdon web site.
[QUOTE=goosepit;484091][QUOTE=specweldtom;170462]JECustom and I have both heard that the Reloader powders are very temperature sensitive. I have a good load in .280 Rem with Reloader 22. Should I be looking for another powder?
I see no reason to rush out and change powders if you have a good load and are aware of the
temp changes in your range of temperatures.
High temps seem to be the culprit and it should be of concern if you shoot at the higher temps
Sense Hodgdon came out with there extreme line of powders I have tried to convert to them
with very good results except for a few that like other powders better. and on those I just have
to watch the temp when I use them (One load will increase 150 ft/sec from 30o to 100o).
No where near the experience you guys have but here is my experience with RL22 and two 300 RUM
My brother and nephew asked me to work up the a load that would work in both Remington 700s using this powder. They also hoped I could find the same load that was interchangable in both guns. Riiiiiight.
Surprisingly, much easier than I thought. One is a standard 700 in a glass bedded laminated stock. The other is a heavy fluted barrel in a expensive pillar bedded synthetic stock. Barrels broken in on both. Each of the guns supposedly hated factory ammo.
I used 180 gr Barnes TTsx bullets. I found that 87 grains of Rl 22 gave the best accuracy. I avoided pushing the load over 87.5 grains because, of the temp. sensitivity fear and they aren't my guns.
Fired all groups at 300 yards.
The one day the temp was in the 80s and I had "cooked" the rounds in my car all day. Can't remember the velocity average at the moment. Groups were 0.5 moa(great for me). No pressure signs but velocity was a bit higher than my goal.
This winter I completed the project. Temperatures were in the 30s to high of 40 degrees F.
Excellent groups again but the one group poi was 3 1/2 inches lower in the cooler weather. No horizontal deviation. The velocities averaged 150 fps less. In my brothers gun the poi was 3 inches lower in the cooler weather. With an average loss in velocity of 125 fps.
They are happy that the 87 grains works in both guns and they got much better accuracy.
My take away is that "pressure sensitive" powders can/do give good accuracy but I will not push the velocity to the upper limits.
About a year ago or so on this site, there was a post in a thread listing powder sensitivity in order from most to least. Not sure what tests it was based on, but I can't seem to find it now. Anybody remember where that is? Seems relevant to the discussion at hand.