Ok I'm asking about what YOU guys use in your 338WM for hunting in, say, zero to 90 deg. Did you have any issues when it got warm and did you lose a lot of speed (affected your zero) at colder temps? I see lots of folks use what I call the Old Regulars, i.e. IMRs, Hodgdons, Reloder 22 ( and R19) What do you use please? thanks.
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