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Post by JohnEakin on Mar 2, 2013 22:53:32 GMT 8
Measure the diameter. This looks to be about one-half inch so my guess is this is a .50 BMG (Browning Machine Gun) bullet. The spec actually calls for .511 inch diameter, but it will be slightly smaller if it has been fired. If there are no rifling marks, it has probably been pulled from the cartridge to extract the powder - perhaps as a fire starter or to be used in an improvised explosive.
There are quite a variety of different bullet types for different purposes. Google on .50 BMG for a list.
.50 BMG is about the only round of about this size used by the U.S. Military in the last hundred years or so, but there's a chance the other side had something similar.
One other thing since you have included a 30.06 round for comparison - the .50 BMG is a scaled up version of the 30.06 with the same basic shape.
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Post by JohnEakin on Mar 3, 2013 5:36:28 GMT 8
The .50 cal is a bad mutha and employed against a number of types of personnel and material targets. Ya don't have to get hit with many of them to spoil your day. It has only been in the last few years that they have started using the .50 cal as a sniper rifle and it will reach out to a half mile or more to deliver a message.
The bottom is probably not the best way to tell if the round has been fired as the bottom of most jacketed bullets have kind of an unfinished look. Also, some, like tracer rounds, may have a cavity in the base. If it is a .50 BMG and it has been fired, you'll definately see the rifling marks on the sides.
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Post by victor on Mar 3, 2013 7:57:22 GMT 8
Hi Bob, looks like a .50 cal projectile to me. I took a similar picture of a 30.06 and a .50 that I have. (click for bigger)
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Post by chadhill on Mar 4, 2013 5:41:40 GMT 8
Hi Bob, It looks like this .50 cal I found near Mount Alifan on Guam in 1985: For comparison, .50 cal from Guam, Japanese 6.5 mm from Denver Hill, Corregidor, and 30-06 clip from Yellow Beach, Iwo Jima that I found in the 1980s:
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