Cold & Hot Load

[Bigwheels]

Ok I just got my load dialed in with the 230gr Berger But my load development was in the cold. 24*-36*. Shot sub .2 moa. However last outing was 45* & my velocity had increased significantly. Still shot well for the conditions but MV has increased from 2840 to 2853fps last time.
Have any of you developed 1 load for cold temps & another for when it's hot?
FWIW rifle is a 300Win Mag 28" 1-9.5"tw.
Load is 73.7gr H-1000 Berger 230 Tgt seated .005" off the lands.

 

[HoustonB77]

I wouldn't call 13 fps that significant. If it's shooting well without pressure role on.

 

[Milo 2.5]

With an extreme powder like H1K, you should not need a diff load, if you run into issues, pull powder in the summer, load good to go.