Thus far had not experimented with RL15 simply based upon the fact that 15 has been very scarce as far as availability for the past few years. Over the past few years if I saw a pound I would buy one but just for stockpile. Now that I have about 5#'s I figured now I could start some testing. My first tests were 22 cal 69gr Nosler CC's. I was dam impressed it didn't take me long to find a sweet load for both my AR15 Varmint and my Savage 10FP. 24.6gr yielded .389 moa @ 2835 fps with my AR , and .539 moa @ 2745 fps with my Savage FP . So I guess it's obvious why RL15 flies off the shelf quickly at the hint of a "panic". I think I will give 15 a try for .308 as well.