I've used a fair amount of Re-15 in the 308. I will NEVER buy it again. I've tested 8208, AR Comp, H-4895 and Varget in my 4 308's, 2 gas guns and 2 bolt guns. Any of those are my preferred powder in the 308 with 155's, 168's and 175-8's. Re-15 is temp sensitive enough for me in my climate...