Temperature Stability: Is there an official standard?

[mkmoy]

Does anyone have a link to a comprehensive list of velocity/temperature values for all the different powders?

Here is a chart that I came across and saved. The advertised temp stable powders do line up as the chart indicates. I do not know the source that developed this chart however so use with discretion.

 

[jelenko]

I’m the OP. The original question (which predictably derailed) really is a “yes” or “no” proposition.

So is the answer “no”?

Yes, the answer is 'no'.

 

[CharlieNC]

There was a good article in the NRA Shooting mag a few years where several sensitive vs stable powders were tested throughout the seasons in an assortment of cartridges. A major takeaway was it depended on the cartridge! I recall because my favorite cfe223 was as stable as varget in the 223, which reflected my informal observations.

 

[Dave M.]

One FPS per degree f is really quite outstanding. There are some powders like reloader 15 that are closer to 8 or 10 FPS per f degree.

I beg to differ, there is no powder we use in competitive shooting that varies 8-10fps per degree change, and I have tested this many times with RL-15 which shoots incredibly accurately from 30F-100F. The plot is not linear across the entire temp range but at no point does the slope of the line get any greater than 2fps per degree F of temp change. Why would you even state such ridiculousness when you’d know it wasn’t true if you tested it yourself. Find me one other credible shooter/reloader on this site that agrees with false info you printed above and I’ll take back every word I said.
Dave

 

[urbanrifleman]

I beg to differ, there is no powder we use in competitive shooting that varies 8-10fps per degree change, and I have tested this many times with RL-15 which shoots incredibly accurately from 30F-100F. The plot is not linear across the entire temp range but at no point does the slope of the line get any greater than 2fps per degree F of temp change. Why would you even state such ridiculousness when you’d know it wasn’t true if you tested it yourself. Find me one other credible shooter/reloader on this site that agrees with false info you printed above and I’ll take back every word I said.
Dave

You are correct I misspoke from memory. It was 2 fps per degree f.