Hi,
i have a good friend who collects and shoots express rifles, I am a large bore shooter. We were discussing loads for the 416 Ruger in comparison to the 404 Jeffreys. He brought up the point about powder temperature problem with express rifles. The problem is always expressed as the initial bringing of munitions to the field by a hunter, he pointed out the problem was the storage and shipping of the munitions in the constant higher temperatures. I thought I would share this as I never have seen this discussed before.