DAA .40 BULLET GAUGE 20SDAA Golden 20 Pocket Case Gauge by Double Alpha Academy Any competitor serious about his shooting is aware of the importance of drop testing one's bullets before a match. Since most malfunctions are ammo related, and most of those relate to deformed, bulging or otherwise defective brass dropping the bullets into a gauge is an effective way to reduce the chance of a costly malfunction. The problem has always been that it takes time! over 15 minutes at
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