Forum: 300 Whisper Ammo and Reloading
02-24-2010, 10:35 PM
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Replies: 3
Views: 1,262
M1S Barrel - MK 220 Cartridge Length
I just got a new M1S upper and started developing a subsonic load.
The first item I check is proper COL using a dummy round with a MK 220 bullet. I'm getting land interference at 2.273". So, 2.260"...
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Forum: 300 Whisper Rifles and Pistols
07-02-2009, 04:36 PM
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Replies: 8
Views: 1,727
Olympic 300 Fireball No More
Just got off the phone with Olympic Arms sales. They no longer make the 300 Fireball upper (for the past year). Apparently not enough selling. Also, ignore the Midway.com item for that make upper. ...
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