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Old 04-11-2002, 08:50 AM   #1
Join Date: May 2001
Posts: 30
Hi guys. Could anyone explain to me the suposed subsonic ammo stopping effects and the differencies respect supersonic one? It´s a topic I don´t know well and I´d like to know some more about it.

Thanks in advance.

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Old 04-13-2002, 10:27 AM   #2
Junior Member
Join Date: Mar 2002
Posts: 8
First subsonic is less than 1080 FPS anything higher is supersonic. You get the crack or sonic boom in supersonic. I am a little unclear what you want to know, but I personnaly don't believe in the term stopping power. If you want to know what works best, I like deep penetration about 14 to 15 inches with lots of weight and expansion to 60 caliber or more. As for your stopping power, it's just plain ol'e good shot placement. The speed of a bullet is really irrelevant if you obtain good shot placement and the above information.
The problem is that in the early days of hollow points velocity was needed for expansion but with todays bullet designs it is not nesessary and you get better penetration with slower rounds in hollow point form with great expansion. I hope this answered your question.
Old 04-15-2002, 06:35 AM   #3
Join Date: May 2001
Posts: 30
Thank you guy. This were my question. I were not sure how the velocity could affect to the bullet expansion in hollow points or similars.

Old 04-15-2002, 06:51 AM   #4
Join Date: Jan 2002
Location: Alabama
Posts: 55
Howdy, German!

Sind sie aus Deutshland? Just wondering.

To further what "cocojo" said, velocity becomes a factor depending on the design of the bullet itself. Early hollowpoints needed velocity to expand with any consistency. In the past 10 years or so, a lot of research has gone into making defensive ammo that expands across a much wider range of velocities. So, if you can get ammo such as Federal Hydra-shoks, Winchester Ranger SXT, Remington Golden Sabre, Speer Gold-Dot, or other comparable "high-tech" designs, you don't have to worry so much about the "sub-sonic vs. super-sonic" issue. Unless, of course, you are using sound suppressed weapons. :smile:

At one time one of the ammo producers used the phrase "sub-sonic" as some sort of marketing hype, but I'm not sure that some consumers even understood the significance of this.

Hope this helps. Guten tag!
Old 04-20-2002, 07:57 PM   #5
Join Date: Sep 2001
Location: MI, CO
Posts: 47
I'm of the penetration school as well, however, most of the time the faster a bullet is moving the more it expands. Sometimes bullets can expand too much. Sometimes they expand too little. The more a bullet expands the less it penetrates.

None of these are absolutes, but they are true most of the time.

Sometimes fast moving 9mm Hollow-points that weigh 115gr and are going 1400 fps don't expand at all. If you'd like to know more I recommend visiting:


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