Anyone have good G1 and G7 BCs for M193 56 Grain 5.56x45?

Discussion in 'Small Stuff--22s, 20s, and 17s' started by Zurdo, May 22, 2020.

  1. Zurdo

    Zurdo

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    Anyone have good G1 and G7 BCs for M193 56 Grain 5.56x45?
     
  2. mac86951

    mac86951 I prefer my targets level and unmoving Gold $$ Contributor

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    Hmm, I understood it as an 55gr FMJ.

    BC is velocity dependent, so what's your velocity? Otherwise, I'd check with the bullet manufacturers, I think most of them have a 55 fmj.

    -Mac
     
  3. Zurdo

    Zurdo

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    Thanks Mac. I just got the LabRadar so I am going to get the MV. I am just struggling to get anything from the German manufacturer. I know it is just plinking ammo but I wanted to see if anyone has good data already on hand.
     
  4. Zurdo

    Zurdo

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    I also find much more info on the 55 gr lots but the stuff I picked up is actually 56 gr.
     
  5. mac86951

    mac86951 I prefer my targets level and unmoving Gold $$ Contributor

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    I would highly doubt that those bullets are actually 55 or 56gr consistently. Try .243 for G1 bc to start and I bet that will suit you well enough.
     
  6. Zurdo

    Zurdo

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    Thanks Mac. Probably right for the low grade quality. I"ll try 243
     
  7. mac86951

    mac86951 I prefer my targets level and unmoving Gold $$ Contributor

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    I ran into this exercise when searching for ultimate BC and I realized that small changes in BC really don't mean squat if accuracy isn't way better. For example check the ballistic calculator for .243 and .223 and see how much change at the distance you intend to shoot.

    FYI, try 0.302 G1 for the 62 with steel core.
     

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