Forum: 300 Whisper Ammo and Reloading
10-17-2010, 01:51 AM
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Replies: 3
Views: 1,007
Failure to feed-125bt's-M1S SBR
I really thought I had it nailed down. M1S 10.5" AR15 in .300 whisper, gas port opened to .086, which cycles 220smk's subsonic flawlessly. Extensive load research led me to produce 300 or so 130gr...
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