Originally Posted by bobs
7stw - you mentioned that RL25 is more temp stable than RL22. Temp sensitivity is the reason I've stayed away from the RL powders (RL15 is the one exception I know of). I have read that RL17 is pretty temp stable also. What experience or data do you have with RL25 regarding temp? I'd really like to use it.
bobs, as we all know, and almost anybody who has loaded RL22, everyone will tell you that it varies substantially when the temps fluctuates. I have been a fan of it, and I understand when I can, and when I can't use it. That all being said, I tried some RL25 in the spring, and have shot it a few times, at varying temps, and have noted that I didn't get pressure when I expected to get it, and POI didn't change much either. It is by no means a " extreme " type of powder, nor is it advertised to be. I just noted that I didn't get the sensitivity that I have encountered with the 22. So, at least at this point, it does seem to a little better anyway.
Now, onto the 17' I really like that stuff. I shoot it in my .25-06, and it loves it. It IS advertised as being a less temp sensitive then it's other RL series brethren. Velocity is said to be higher, with less pressure. I have not chronoed any loads of recent, but I will be doing some soon.
It seems to me, that when the temps are between 30-65, I can safely and predictably use RL22' and get good speed, and accuracy, and no pressure spikes or dips. The RL 25, seems to exhibit more energy, and lower ES. That's just my take on things so far.