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Thread: Anyone heard of a 3.5 inch bpe cartridge - 11.88x90?

  1. #11
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    Excellent! I have all the books mentioned and load and shoot several black powder cartridges. I'm just used to having my bullets one or two thousands over groove diameter so my first thought in this case was to look for a fatter bullet.

  2. #12
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    Then all I did was tell you a lot of stuff you already knew....lol! Yea, they will bump up quite a bit with black if they're soft.. If you do want a bigger bullet Accurate molds can cut one, as can others...and I suspect you probably knew that also.

  3. #13
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    Just another, maybe the first example of the upsetting of undersize soft lead bullets at the "push" of black powder: The Swiss "Eidgenoessischer Feldstutzer M 1851", the first "smallbore" (under .50") military rifle:
    http://www.germanguns.com/upload/sho...to-ID-this-Gun
    This rifle had a .410" bore with 8 grooves .2 mm deep. It used a solid , no hollow base for expansion, 262 gr pointed lead bullet, bound into a greased cotton patch, in front of 62 gr black powder. As this was a muzzleloader the .40" bullet + patch was at least as small as the bore diameter to allow it being pushed down the bore on loading. On firing this rather long lead slug set up enough to engage the rifling.

  4. #14
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    Another example I personally know of is a friend of mine has a Whitworth replica with the hexagonal bore. He did not have the mold but used a 520 gr. Lyman 457125 lubed and loaded. Bob said when he recovered the bullets they were bumped up to look like the mechanically fit Whitworth mold. He also said it was amazingly accurate out to 500 yards.

  5. #15
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    Attachment 2515
    Will try to post some pictures.
    The case on the left is a new 450 3.25. The case on the right was fired through the rifle with a stout blackpowder load you can see how it has expanded.
    Measurement just in front of rim in inches: factory .537 fired .555
    half way down case: factory .500 fired .547
    case mouth: factory .472 fired .520
    I will have materials here for a chamber cast in a couple of days.
    Last edited by cordite; 01-28-2016 at 12:47 AM.

  6. #16
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    20160127_174216.jpg hope this works

  7. #17
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    DSCF1776.jpgproofmarks

  8. #18
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    DSCF1777.jpg more proofmarks

  9. #19
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    DSCF1778.jpg also comes with a set of shotgun barrels not shown

  10. #20
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    DSCF1779.jpg cylinder choke in shotgun barrel even though barrel says not for ball.

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