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300/221 and 300 blackout reloading dies
Just recently got back into new ar build I decided on a 300 Blackout only problem is where is the ammo? Anyway I have decided to reload and more confused which reloading dies to buy? Between 300/221 whisper dies or the 300 blk foster dies can any one give me a clue. BTW also are the ammo interchangable between 300 whisper and 300 blk?
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