Neat stuff! 9mm vs 40s&W vs 45ACP Ranger cartridges on WinchesterLE site

I don't think the test were insinuating that the 9mm penetrated 19" of steel, but maybe that the bullet penetrated 19" into the gelatin after penetrating a steel plate of unspecified thickness, and same for the rest (ie. penetrated 4 layers of denim and then penetrated 15.7" of gelatin), since it says "bare" gelatin as the first substance.

I would imagine the .40S&W and .45ACP would penetrate less due to the increased resistance experienced by a bullet of greater diameter (the force is exerted over a slightly larger surface area). I am just guessing of course. I can remember where I read it (I am trying to find it right now) but apparently some .22lr bullets penetrate quite far maybe due to the poor expansion, and small diameter (at a close range of course).
 
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I have it on good authority the 9MM, 40 S&W and .45acp all penetrate the IDPA target to exactly the same depth. IPSC targets provided little additional information because none of the three cartridges fired failed to lodge in the targets either. Relative expansion tests were impossible as none of the test bullets were recovered.

Take Care

Bob
 
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