My 2 cents. Develop your load at 90 degrees w RL26 and leave just a little velocity on the table.
Then if you plan to shoot or hunt in cold weather just resight your scope for the lower velocity when you get there.
But, what I did was build a ragged edge high velocity load in Michigan at 60 degrees and the take that to 90 degrees in Texas, and there is no help you can get doing it that way if things go wrong......
Develop in hot. Adjust scope in cold. OR have two different loads color Coded! Developed in Hot is Red.
Developed in Cold is blue.
Scope adjustment needed when you switch climates in both cases.
This applies to any powder that has temp sensitivity, not just RL 26.
Then if you plan to shoot or hunt in cold weather just resight your scope for the lower velocity when you get there.
But, what I did was build a ragged edge high velocity load in Michigan at 60 degrees and the take that to 90 degrees in Texas, and there is no help you can get doing it that way if things go wrong......
Develop in hot. Adjust scope in cold. OR have two different loads color Coded! Developed in Hot is Red.
Developed in Cold is blue.
Scope adjustment needed when you switch climates in both cases.
This applies to any powder that has temp sensitivity, not just RL 26.