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Aluminum Tipped Bullets from Goergia by Greyghostt

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  #15  
Unread 06-14-2008, 11:16 PM
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Join Date: Dec 2002
Location: Northern Michigan
Posts: 1,014
300 SMK on the left 280 Henson on the right.
  •   #16  
    Unread 06-14-2008, 11:33 PM
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    Join Date: Jan 2004
    Location: Blackfoot, Idaho
    Posts: 8,859
    Hmmmmm, cute;)

    SMKs out of mine at 27xx FPS into an 8" wall of blow sand (very fine) at 200 yds penetrates about 5". A 3 shot group will pass through though, if the sand is at all moist.

    The remains looks absolutely devastating, no fragmenting, just one heck of a hunk of shrapnel.

    I only had 6 of the AL tips and loaded them so that a loaded round could be ejected. I don't know how far back they were. For all practical purposes, the single 3 shot group I shot after using 3 to get the correct powder charge, went just a bit bigger than what is expected of the SMKs. Just under 0.7 MOA @ 200 yds.

    Average velocity for the 3 shot group was 2896 FPS with a bigger ES than I want. Was using US-869

    I'll have 100 on the way next week.
    __________________
    I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!

      #17  
    Unread 06-15-2008, 06:20 AM
    Lightvarmint
     
    Posts: n/a
    Quote:
    Originally Posted by MagMan View Post
    300 SMK on the left 280 Henson on the right.
    Nice photo........ Looks like a .768 and a .878 to me.

    James
      #18  
    Unread 06-15-2008, 07:55 AM
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    Join Date: Nov 2005
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    I assume that the 180 grain will be the lightest 30 cal, if so how long is it and what is the absolute slowest twist @ 3000 fps that could be used?

    Thanks, looks very interesting.

    edge.
      #19  
    Unread 06-15-2008, 12:36 PM
    Lightvarmint
     
    Posts: n/a
    Hello,

    We have not shot them in anything slower than a 10" twist and they stabilize well in that twist. The bullet length is basically the same as the 240 SMK which has a BC of .711. Due to differences in the drag functions of the nose of the SMK as compared to the Georgia bullet, the Georgia version should have a higher BC. We will know for sure in the next two weeks or sooner.

    I think there is a website out there that can calculate required twist based on some measurments. If anyone knows of it let me know and I will take the measurements and find out what the math indicates.

    James
      #20  
    Unread 06-15-2008, 04:04 PM
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    Join Date: Aug 2003
    Location: NC, oceanfront
    Posts: 4,056
    Post the measurements and I can calc it.
    Need:

    Length
    NoseLength
    BearingLength
    BoatTailLength
    EndDiameter
    MeplatDiameter
    Weight
    Cal
      #21  
    Unread 06-15-2008, 04:57 PM
    Lightvarmint
     
    Posts: n/a
    Quote:
    Originally Posted by Mikecr View Post
    Post the measurements and I can calc it.
    Need:

    Length
    NoseLength
    BearingLength
    BoatTailLength
    EndDiameter
    MeplatDiameter
    Weight
    Cal

    Hello,

    You have an incoming private messege

    James
    The thread is closed

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