I am wanting to switch over to some less temp sensitive powders. Right now I am using IMR4895 for my 308win(178AMAX), IMR 4350 for my 243win(105 AMAX) and rl22 for my 300win(200 ACCUBOND). I also have a 260 rem on the way. Thus far I have Been buying all my power in 1lb bottles. I will be switching to 8lb containers and would like to find a powder that might cover a few of these cartridges. Any suggestions?