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Aluminum Tipped Bullets from Goergia by Greyghostt

 
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  #15  
Old 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  
Old 06-14-2008, 11:33 PM
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Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,238
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.
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  #17  
Old 06-15-2008, 06:20 AM
Lightvarmint
 
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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  
Old 06-15-2008, 07:55 AM
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Join Date: Nov 2005
Posts: 1,082
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  
Old 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  
Old 06-15-2008, 04:04 PM
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Join Date: Aug 2003
Location: NC, oceanfront
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Post the measurements and I can calc it.
Need:

Length
NoseLength
BearingLength
BoatTailLength
EndDiameter
MeplatDiameter
Weight
Cal
  #21  
Old 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
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