The rest of the .221 based Whiisper family?
Hello everyone.
I am interested in finding both subsonic and supersonic data on the cartridges related to the .300 Whisper. I cannot find any balistics data on these on the SKS site.
Actually I am interested in all cartridges that can work in 5.56 magazines that do not require major alteration to the magazine or the bolt face.
Thanks
Jon
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