What size mold do I need for a 300 blkout would it be .308
What size mold do I need for a 300 blkout would it be .308
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Pretty much any of the molds on the top row could be used for 300 BLK. The bullets will drop out at .309-.311 depending on the alloy.
I don’t know if your looking for a subsonic round or a supersonic round. I am assuming subsonic, in which case the 200-230gr options are your best bet.
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I'm powder coating Lee's c309-160-R, using 18.0gr of 2230 and averaging 1492fps in a 16" barrel and 1315fps in a 7 1/2" barrel.
My BHN11 alloy is dropping at 166gr, gas checked before coating and resized at .309" after coating, OAL 1.940".
Resizing for consistency and expanding the case mouth is usually a must. This reduces shaving the bullets or damaging the case neck when seating the bullet.