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Gelatin test: .40 S&W 180 gr Gold Dot fired from pistol and carbine

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Old 02-26-2014, 06:39 PM   #1
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Default Gelatin test: .40 S&W 180 gr Gold Dot fired from pistol and carbine

40 S&W 180 gr Speer Gold Dot loaded over 9.2 gr of AA#7 fired from a Kel-Tec Sub 2000 carbine and Glock model 22 pistol through four layers of denim into calibrated gelatin.

BB: 593.6 fps, 3.4"

Pistol data:

Impact velocity: 1,081 fps
Penetration: 14.5"
Retained weight: 179.7 gr
Max expansion: 0.741"
Min expansion: 0.492"

Carbine data:

Impact velocity: 1,320 fps (approx.)
Penetration: 16.6"
Retained weight: 178.9 gr
Max expansion: 0.781"
Min expansion: 0.538"

A few notes: The chronograph did not catch the impact velocity from the carbine shot so I took a four shot average. Velocities were:

1,312 fps
1,317 fps
1,327 fps
1,324 fps

I was surprised at how much velocity the bullet gained from the longer barrel and I was surprised to note that the faster bullet actually went deeper. I had to double check. The only explanation I can come up with is that the extra velocity pushed the petals back against the shank earlier.

Speer lists the factory velocity as 1,025 from a pistol so I believe that I got fairly close to what they put out but I do not know what powder they use so the burn rate could be substantially different. I did not have any extra factory ammo available for testing.


Gelatin test: .40 S&W 180 gr Gold Dot fired from pistol and carbine - Ammunition & Reloading


Gelatin test: .40 S&W 180 gr Gold Dot fired from pistol and carbine - Ammunition & Reloading

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Old 03-01-2014, 03:38 PM   #2
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Thank you again. I was a little surprised at the difference in the MZ's.
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