My very limited temp test of RL17 consisting of two shots at 70deg, and two at just under 20, after sitting out all night with temps to 8, showed no change in velocity. Measured with a Magnetospeed on a 338-06. Other powders lost up to 100fps.
I have gotten the same results for RL17 in the 6.5CM, 7mm-08, 7mm-08AI and 30-06 - zero velocity variation from ~25F to ~65F. Same loads do start picking up velocity as the temperatures go over 70. Have seen 25-50fps from ~65F to 95F.
David
