I found a good very good load today for my nephew's 7mm-08 using RL15. I tried RL 15 based on posts I saw on AR.

I use Varget im my son's 7mm-08, but this one shoots much better with RL15 at the Nosler Manual max load with the 140 Nosler AB.

It was 80 degreres F when I fired the load. No sign of excessive pressure.

This gun will be used in a temperature range of
20 degrees F to 90 degrees F.

I have had good luck with Varget in this temperature range.

What are your experiences with RL 15 and temperature sensitivity?

RL15 was picked in the last year or so to be one of the military contracts in powder for high grade ammunition. I'd say it must perform pretty well in all temps to be picked. I guess if you really questioned it and you did your load testing at 80 degrees maybe try backing off one grain and see if the groups and point of impact really change. That should reflect what would happen as things get colder.

I have used it from below zero Idaho to hot hot Africa with no ill effects...Most of todays powders are not bothered by extreme temps IMO...Just don't push the string on max...

RL15 is my fav. powder in my .338-06 under 210grNPs. I have chrono. the load from 35-90deg. & it shows some loss @ lower temps., maybe 50-60fps, but if you worked the load up @ 80deg. you'll be fine in the snow.

fred,
Can you post you 338-06 load w/R15 and 210NP's

Rel 15 is about my favorite powder thus far. It seems to be workable in about 3/4 of the rounds I load for. It shows good temperature stability compared to its big brother Rel22. It's a very clean powder too.

Hi There:

I think VV hit the issue on the head when it said all powder is temperature sensitive. The real issue is how sensitive is it - some are more than others.

With that said, I have shot about 10 pounds of RE-15 in .308 and .223 in highpower rifle competition. I think the powder is great: it is available, the lot variation isn't bad and works in a variety of temperatures without losing accuracy and it is moderately priced when compared to other products.

What I have learned is that if you work a load up in 50 degree weather and it is at the max., you will need to back down when the temperatures reach 90+. My personal experience is that you might be able to back down between .2 to .3 of a grain - again, this is when using max. loads and load development in the 50's.

As you did the load development in "hot" weather, you might be fine with no powder adjustment.

Hope this helps.

Gurrie Fandozzi

NB, I shoot 53.5gr of RL15, Fed120M & WW, RP or Norma cases. Back off 1/2gr in FC cases, they seem a but soft. Vel. is 2725fps+ from the 22.5" bbl. @ 75deg. This is the rifles fav. load & usually breaks the 1moa mark. My bbl. is very finicky about loads, but loves this one.