Re: Cold weather load development
As long as you keep your bullets a little warmer, you are fine. BUT, a hot day in the summer and you will see higher pressures. A trick I use during the winter is to toss a couple hand warmers in an ammo box with some cardboard as insulation. If you keep your ammo in there, it will stay a little warmer and will be closer to typical fall weather, instead of deep freeze weather. If you are working up loads for a December hunt in Saskatchewan, let them get cold
You can do the opposite in the heat of summer, by keeping the ammo in a cooler with a couple bottles of ice water.
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