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Powder vs Temperature
Am shooting 270 Win and 338 Win will be moving up to 338 RUM........
I work up loads in the summer. Loose more than 100 fps in the winter using RL 22. Havent checked the 338 but suspect similar drops as am using RL powder.
The difference between summer and winter temps can be as much as 80 degrees. Squat, I've seen 50 degree temp changes in the same day.
What cha'll do, huh?
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On the other hand................she had warts
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