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Old April 13, 2014, 12:36 PM   #1
chopinbloc
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.357 gelatin tests

Well, I was in a hurry and I screwed this test up a bit. I forgot to bring my camera and my BB gun so I didn't produce a video this time or get a calibration figure immediately before testing. I did calibrate it at home a few days before the test but technically it's supposed to be done immediately before the test. I still thought it would be worth sharing the results. I'll repeat the JSP test and do it properly since I wanted to see the JSP from a carbine anyway.


125 gr GDHP over 14.0gr AA9 from carbine:

Impact velocity: 1,904 fps
Penetration: 10.7"
Retained weight: 50.8gr
Max expansion: 0.567"
Min expansion: 0.443"


158gr Speer JSP over 13.0 gr AA9 from revolver:

Impact velocity:1,108 fps
Penetration: 17.1"
Retained weight: 157.4 gr
Max expansion: 0.655"
Min expansion: 0.450"




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Old April 13, 2014, 02:00 PM   #2
chris in va
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You can tell that GDHP was designed for revolver velocities. 10" of penetration.

I also noticed AA9 isn't listed in my Lyman manual for a 125gr HP in either carbine or pistol sections. Seems to be mainly for the heavier bullets.
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Old April 13, 2014, 03:55 PM   #3
chopinbloc
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Yeah, it's not a typical choice for that weight. That same load is a little light from the revolver. When I shot it from my wife's Model 13 it only got 1,037 fps.
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Old April 13, 2014, 04:29 PM   #4
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1904 fps!? Wow! Was any of the 70 or so of the lost grains imbedded in the gelatin?
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Old April 13, 2014, 04:36 PM   #5
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Oh, yeah. Almost all of it, scattered along the entire track. The bulk of it was in the first 3rd of the track, though.
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Old April 13, 2014, 05:08 PM   #6
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At least it didn't disintegrate before passing your chronograph.
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Old April 13, 2014, 05:17 PM   #7
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LOL, right? That thing was nearing ludicrous speed.
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Old April 13, 2014, 11:44 PM   #8
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Why in the world would you want a handgun bullet moving that fast? It basically disintegrated!
Maybe you should have used 10-12 grains for the lighter bullet in the carbine.
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Old April 14, 2014, 01:28 AM   #9
chopinbloc
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It's not a handgun bullet when you shoot it from a rifle. ;^)

The American Eagle 158 gr JSP did really well at a similar velocity. A 125 gr JHP just isn't well suited for a carbine. That load was already moving pretty slowly when fired from the revolver.
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Old April 14, 2014, 02:29 AM   #10
Water-Man
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I like the Hornady LeverEvolution 140gr. FTX bullet from a carbine.

I'm using a 20" barrel and getting about 1900 fps.
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Old April 14, 2014, 11:02 AM   #11
chopinbloc
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I wonder if you can get any expansion from that out of a handgun.
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Old April 14, 2014, 11:51 AM   #12
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I can't say personally but Hornady claims it does, for whatever thats worth.

tnoutdoors9, on utube, shows it does. I haven't looked any further.
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Old April 14, 2014, 02:51 PM   #13
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Cool. I'll have to see if I can find some. It would be great to have s load that would perform well from both barrels.
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