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Thread: Polygon Barrels?

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  1. #1
    Moderator rsterne's Avatar
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    BTW, I saw pics of the tins for the big bore JSB Exacts.... The .30 cal is 46.3 gr. and the 9mm is 77.6 gr....

    That puts them similar to a scaled up 25.4 gr. Exact King .25 cal.... Exactly scaled (cubed) that would be 47.5 gr. and 74.0 gr.... Of course the SD is higher with the larger calibers, so the BC should go up....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal: Too many to count!

  2. #2
    Senior Member SeanMP's Avatar
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    Oh ya...wicked.

    I only saw up to 32 cal on his site but it was plastered with "underconstruction"
    Sean

  3. #3
    Moderator rsterne's Avatar
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    .308 cal. LW 28".... check....
    9mm LW 28".... check....

    Sitting on the shelf awaiting the big bore version of my Hayabusa.... Maybe by the time I get around to it (next winter) JSB will have released their Exacts in those two calibers....

    I'm delighted that Eric is now an LW Dealer.... It took me over a year to get my LW barrels.... I will gladly purchase them from him in future....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal: Too many to count!

  4. #4
    Moderator rsterne's Avatar
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    I guess the QB Conversions stop at .45 cal.... The .58 cal isn't QB based....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal: Too many to count!

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