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Penetration

 
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  #1  
Old 05-16-2003, 03:07 PM
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Location: Central Minnesota
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Penetration

A question I have always wanted to ask. How many fps does it really take to penetrate flesh or "soft" targets without taking into account different bullets, etc?
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Old 05-16-2003, 04:37 PM
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Re: Penetration

My answer would be around 500fps. Again this depends on the toughnest of the "flesh" but an airgun will kill a bird at 30ft. muzzle vel is at of just under 500fps.

Just have a look at retained vel for handgun projectiles at different ranges. We know that a 9mm through to a 45ACP is lethal at 100yds. At least to people. The 45ACP is not going very fast but the bullet is heavy.

For me, my min. is 1000fps of impact vel. I know that moderate weight bullets will penetrate the lungs and chest cavity of any animal I am likely to hunt. Expansion would be very small so bullet diameter and weight become critical. Same affect as an arrow.

How fast is a 500gr 45 cal lead slug going at 500yds after launching at 1200fps? We know that will take out a buffalo. Big, bushy hide and wide chest cavity with an on the hoof weight upwards of 1500lbs.

Jerry
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Old 05-16-2003, 08:07 PM
MAX MAX is offline
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Re: Penetration

500 gr projectiles from a 45-70 have lethal velocity beyond 3000 yards. Let's see now, 12 mph 1/2 value crosswind from the left, flock of gnats at 1275 yds..... [img]images/icons/rolleyes.gif[/img]
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Old 05-16-2003, 11:05 PM
 
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Re: Penetration



[ 07-11-2003: Message edited by: S1 ]
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Old 05-17-2003, 12:04 AM
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Re: Penetration

Well, 500fps seems like a lot to me, but then again what do I know. I dropped one of my 220 grain J40 bullets from about 8 inches above my reloading table and it got stuck in the wood. I would say about 150 fps would be enough to go though a deer. (not all the way.) According to the Marines the .308 Win has to penetrate 15" of ballistic gelatin at 1000 yards so who knows. Thanks for all responces.
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