Thanks Ken! I shoot RL22 in my .300 win mag. Never worried about the temp issue as that is strictly a Fall/Winter rifle. When I started shooting my 6mm-06 I planned to shoot it year round so went to RL 23 as I got similar performance with (supposedly) better temp sensitivity.
Do you do your load development and sight in at hunting weather temperature?
I have done both. That particular rifle had the load worked up years ago in the summer and early fall and then I regularly check the zero throughout the year. I know it is safe in warm temps and any
velocity variation between fall work up and late season cow elk temps won’t make any difference at the ranges I kill elk.
I worked up an accurate and fast load for my kids .243 that was no problem at Montana fall temps. Took him to CA on a pig hunt and he shot a coyote at 100 degrees and almost locked up the bolt. Lesson learned going from cool to hot.
