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Old 02-10-2013, 01:40 AM   #21
Anthony
 
Join Date: Feb 2005
Location: Berkeley, CA
Default Re: Low/High-Tech Military Air Guns

The main reason we use explosives is energy density; an airgun with the energy of a conventional rifle will be at about 1/4 the speed, 4x the recoil, and 20x the weight per shot (including tank weight on the airgun, and case/propellant weight for the conventional gun).
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Old 02-10-2013, 03:57 PM   #22
Green-Neck
 
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Location: Fryers Forest Australia
Default Re: Low/High-Tech Military Air Guns

Quote:
Originally Posted by Sam Cade View Post
There are commercial air guns (airbows?) that are shooting arrows in excess of 600fps.

That is enough juice to shoot completely through an elephant and kill the elephant on the other side.
Really?

Certainly not from a GURPS RAW perspective.

IRL if find that my Horton Legend crossbow [165 lbs draw, 305 fps] has enough penetrating power to almost over penetrate a goat shot broadside to the chest [10-12"]. The fletching tends to stop the arrow from completly over penetrating the far layer of skin.
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Old 02-10-2013, 05:01 PM   #23
Sam Cade
 
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Default Re: Low/High-Tech Military Air Guns

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Originally Posted by Green-Neck View Post
Really?
Yup. With a powerful compound bow, complete pass through on critters as big as grizzlies and moose is common provided no bone is hit.

Even fairly light bows can put arrows through a deer sized animal unless you dead center the shoulder joint.
http://www.youtube.com/watch?v=LuLVSosOJWU

http://www.alaskabowhunting.com/imag...ephant_web.jpg



Quote:
Really nice bull elephant taken by Dr. Jan Seski with one Ashby tipped arrow. The bull was quarteing away at 20-yards. The arrow struck high in the crease, traveled between ribs on the near side, cut completely through the top of the heart, then kept going out the other side, once again, between ribs. The ivory was 50+# per tusk. Congratulations to Dr. Jan Seski on another fine elephant with the bow and arrow.
Quote:
Originally Posted by Green-Neck View Post
Certainly not from a GURPS RAW perspective
Terminal behavior of arrows would be impossible to accurately model and have it remain playable.

Quote:
Originally Posted by Green-Neck View Post
IRL if find that my Horton Legend crossbow [165 lbs draw, 305 fps] has enough penetrating power to almost over penetrate a goat shot broadside to the chest [10-12"].
Your arrow is probably pretty light too.
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