Handloading for .300 WSM
I'll be going to Colorado for the second gun week to hunt elk. The Nosler 180 Partition bullet is what I have picked out to develope a load. I have a IMR 4350, H-4350, RL-17, RL-19 and several other powders. I'm developing the load in Central Florida where it's hot and going to be hunting when its' cold. I longest I plan to shoot is 300 yards because that is our longest range, might go 350 yards if the shot is right. My gun is a Browning X-bolt with a 23" stainless barrel. My goal is to have a 2MOA load (6" @ 300 yards), would like smaller but will take 2 MOA.
How much of a concern in powder selection is temperature?
Remington 700 5R .308 Win
Leupold Mark 4 6.5-20x50 LR/T Illum. TMR Reticle
Browming X-Bolt .30-06
Nikon Monarch SF 4-16
Weatherby Mark V 30-378
Nightforce 5.5-22 x 56