Looking for load advice for the 150 grain Hornady GMX in my 308. I got lots of Varget, RL15, IMR3031, and TAC. Anyone with any recommended loadings, please chime in. With my 150 grain SSTs, I use 3031, and get the best accuracy, but was reading the GMX bullets are longer, and 3031 might be too fast of a powder, which leaves me wondering, Please feel free to offer any other recommendations if the powders listed are bettered, as I'm not afraid to try something different, like 4895, or AR Comp. Thanks for the help! Steve
Not too long ago my thoughts on powder for .308 started and ended with Varget when it came to .308s and mono 130s and 150s. Were I doing some workups in 308 today for those weights I would be starting with 4451. Everywhere i have used it in place of Varget it has been better. Burns clean, fights copper, produces better velocity.
Also, for what it's worth, I would be using the Barnes 130 TTSX. There's nothing a 150 does that the 130 will not do with much better velocity and less recoil. I like many others start my monos at .050 off. If they are not shooting accurately there when I get to pressure, I move to .010 off and step back in .010 increments until I find accuracy. Trying random seating depths just wastes bullets and sometimes cons you into accepting something short of what the rifle will produce.
