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Old October 17, 2011, 10:43 AM   #1
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Speer gold dot expansion test

A couple of weeks ago I tested some factory speer gold dots in the test tube expansion media. Take a look at some pics;

Viewed from the back of the bullet, just above where it came to rest. I cut in from the backside to remove the bullet.

Entire wound path with the bullet resting almost completely through. This was deeper penetration than any other 200 grain 45 HP bullet I have fired into the "test tube" media. But that's not too many, as I just started experimenting with it.

Frontal view, a bit out of focus. Expansion was .865 at it's widest with the rest at .705.

If there's any doubt about whether the gold bond is a bonded bullet, the appearance of the lead clinging to the copper plate, the 100% retained weight, AND the total absence of lead in the wound channel should be proof enough.

Now, Speer has stopped selling gold dots as reloading components. Instead they are now calling them "deep curl". It's basically the same bullet only a different packaging. As soon as the 45-200 deep curl becomes available, I'll get some and load them to re-test.
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Old October 17, 2011, 03:16 PM   #2
Mike / Tx
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I have been shooting the GD's in 180grs from my 10mm Javelina for about as long as they have been on the market. Your test shows exactly why I have chosen it.

I hunt with my 10mm and those GD's simply work plain and simple. I have recovered a few over the years from feral hogs, but for the most part they simply rock right on through. Starting them off over 13.5grs of AA-9 gives me just over 1300fps from my 7" barrel and makes for a formidable load.

I sure do appreciate your doing those test, as they have shown some interesting results to us folks who don't have that type of media to play around with.

Mike / TX
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Old October 17, 2011, 05:53 PM   #3
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That pretty much duplicates the WW Silvertip that failed so badly in the FBI Miami-Dade Shooting. Off the top of my head DOJ recommends 12" to 14" of penetration now.
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