Temp stable powder

[PApa Black]

I have been trying to find more info on various powders and their stability in different temps. I cannot really find much except for chats about powders like RL do fluctuate more then others. I cannot seem to find a lot of info on different brands of powder. Anyone help me find info or charts I would appreciate it.

I asked that question to Hodgdon in 2019 and this the reply:
Mike Van Dyke

Customer Service Representative

Hodgdon Powder Company

6430 Vista Drive

Shawnee, Ks. 66218

913-362-9455 Ext. 109

Temperature Insensitive Powders

Benchmark

H1000

H322

H4198

H4350

H4831

H4831SC

H4895

H50BMG

IMR 8208 XBR

Retumbo

VARGET

IMR Enduron 4166= 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges.

IMR Enduron 4451 = 270 Winchester, 30-06 or 300 Winchester Short Magnum, among others.

IMR Enduron 7977 = 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges.

IMR Enduron 8133 = 6.5-300 Weatherby, 264 Win Mag, 28 Nosler and 300 Rem Ultra Mag, among other cartridges.

 

[SouthLoganCountyShooter]

Ive used both IMR 4451 and 4166 with great results. Very good comparable accuracy to my other loads without the temp issues in the summer. My shooting temps range from 0-upper 90's in the summer. IMR Enduron powders were designed for this and seem to be easier to find right now as well.

I absolutely love 4451

 

[stirner]

http://www.predatormastersforums.com/forums/gallery/80/full/2350.jpgView attachment 341809

Any idea on the date this was compiled? Most Alliant and Hodgdon powders are now temp insensitive. Just go to their websites and look up the individual description of the powder, and it will tell you if it is temp insensitive.

 

[LRNut]

Another beautiful feature of the LabRadar - you can record MV of every practice shot year round.

 

[Wachsmann]

I checked for pressure on all the cases after firing them. Primer pockets are still holding primers fine, not too loose. No ejector swipes either. But to produce the extra 100fps (calculated) then they had to almost be a 1/2 grain over my recipe charge which would of put them to the max Hodgins suggested max load for a 168gr bullet. I'll never know i guess but what I went out to check was the stabilization of the 168ABLR in the 9.5 twist 22 inch barrel. At 400 to 450 yrds they are still flying straight and not keyholing. So the bullet is flying stable but with a reduced BC. In my reloading I had thought there was an upper node from where I was originally at but the power was getting compressed so I was trying to stay away from the compressed powder. Even though my groups were all above my point of aim it showed some interesting grouping that now gets me to thinking about a higher velocity node. But I'm almost out of staball and will be using H4350, H4895 and or IMR, or RL17. I know my old 308 loved the IMR4895 with a 168 and a 175. Also it cost to much to chase speed. I few more clicks on the scope is free.