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Thread: Magtech subsonic 147gr cracking

  1. #1
    Registered User Mackjack's Avatar
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    Magtech subsonic 147gr cracking

    Using some Magtech "subsonic" 147gr ammo in my sbr semi auto uzi. 10in bbl. 80 percent of the rounds go supersonic. Anyone run into this? Did I get a bad batch or is it just cause my barrel is too long?

  2. #2
    UZI Talk Life Member
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    Magtechs have all stayed subsonic out of a 6" barrel for me.

    For me the worst even with a 4.5 in barrel on a Browning Hi Power were 147 Speer Lawman. Maybe 15% would crack.

  3. #3
    Registered User Mackjack's Avatar
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    Thanks! I guess I'm not the only one. I'll have to do some digging around for slower Ammo or start hand loading I suppose.

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