I've got a Remington 700 sendero SFll in 300 win mag,fluted 26"bbl, in an H.S. Precision stock. Bought the gun to shoot elk and long range target (600+). I am having problems developing a hand load for the rifle. I do not have anyone locally that can help me out. Has anyone got this gun to group? Tried 168 sierra to 180s, tried different powders.