Not realy an answer to your question but...What I do for cold weather loads being loaded in the heat is throw some of them in the fridge for a few hrs and carry them to the range in a cooler, chrono them hot and cold and note the differences in velocity and accuracy. I have just started using BL-C(2) my self in a .222 wrapper. So far so good. Sorry idont have more info.
~z
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A scalpel can be just as effective as a broadsword
Obviously, Occam was not a reloader
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