Forum: 300 Whisper Ammo and Reloading
08-27-2010, 10:49 PM
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Replies: 9
Views: 2,317
subsonic load development
When you develop subsonic loads you absolutely need a chronograh. You should start with the minimum loads listed in the manual and decrease the loads by 0.2-to-0.5gr until your loads drop to...
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