Re: [Phys-l] Ballistics divertissement

["Goff, Jim" <jgoff@pima.edu>]

I have fired thousands of rounds of both blank live ammunition. There is a noticable difference in recoil fo a rifle sized cartridge. I'm not a pistol shooter, so I speak with much less authority there.
Jim Goff
Pima Community College
Tucson, Az
c


-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu on behalf of John Clement
Sent: Fri 10/6/2006 8:39 AM
To: 'Forum for Physics Educators'
Subject: Re: [Phys-l] Ballistics divertissement
 
There might also be a noticeable difference in the smoke.  The blank may
produce more smoke coming out of the muzzle, while the live round might have
more smoke coming out of the chamber.  There might also be a difference in
the sound, but that would be very subtle and would not be noticed unless
they fire sequentially.  I suspect that the recoil question might be better
answered experimentally by someone who has experienced the difference
between a blank and live ammunition.

John M. Clement
Houston, TX

> I watched a TV movie last night of the CSI variety, which revolved
>   around twelve jurors, dismayed by a torturer/killer going
>   free,  who conspired to train themselves to execute (!) a firing squad.
> This  program emanated from a country which does not
> (publically)  endorse state-sponsored torture, so there
> was a dramatic element.
>
>   A policeman casually mentioned, the shooters would know which of
> the twelve had the live round in the rifle - the recoil of course.
>
> So here's the point that puzzled me: supposing that each round had
> the same propellant charge, what would be the magnitude of the
> recoil/difference?
>
> I expect that it would be reasonable to have some numbers,
>   so let me pull these out of the air:
> bullet: 0.030 kg
> muzzle velocity: 500 m/s
>
>
>
> Brian Whatcott    Altus OK    Eureka!
>
>
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