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#3093026 - 09/13/10 08:50 PM Interesting article about "No allowance shooting"  
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Damocles Offline
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#3095475 - 09/17/10 07:59 AM Re: Interesting article about "No allowance shooting" [Re: Damocles]  
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DocW Offline
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Thank you. Good find.

Michael.

#3095524 - 09/17/10 10:19 AM Re: Interesting article about "No allowance shooting" [Re: Damocles]  
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very good article bud

#3095604 - 09/17/10 01:24 PM Re: Interesting article about "No allowance shooting" [Re: Damocles]  
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Jazz music, yeah...


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#3095776 - 09/17/10 05:07 PM Re: Interesting article about "No allowance shooting" [Re: Freycinet]  
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Interesting, but ...

" The bullets will leave the gun and at first go straight ahead, but after a second or so they will start to curve downward."
That's cartoon physics! LOL!

#3095810 - 09/17/10 05:51 PM Re: Interesting article about "No allowance shooting" [Re: Vanderstok]  
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DocW Offline
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Originally Posted By: Vanderstok
Interesting, but ...

" The bullets will leave the gun and at first go straight ahead, but after a second or so they will start to curve downward."
That's cartoon physics! LOL!


probably so, but it makes the case crystal clear for the uninitiated. I respect people very much who dare to appear amateurish in order to keep things simple for those who need it.

Michael.

#3095827 - 09/17/10 06:06 PM Re: Interesting article about "No allowance shooting" [Re: Vanderstok]  
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Josh Echo Offline
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Originally Posted By: Vanderstok
" The bullets will leave the gun and at first go straight ahead, but after a second or so they will start to curve downward."
That's cartoon physics! LOL!


I'm not so sure; he may be right. How far has a bullet travelled after one second?

#3095831 - 09/17/10 06:12 PM Re: Interesting article about "No allowance shooting" [Re: Josh Echo]  
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DocW Offline
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Originally Posted By: Josh Echo
I'm not so sure; he may be right. How far has a bullet travelled after one second?


1200, maybe 1500 ft ?

Michael.

#3095834 - 09/17/10 06:17 PM Re: Interesting article about "No allowance shooting" [Re: Damocles]  
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I think it's starting to drop a bit by then, although I do agree that the writer in the posted article is probably overemphasizing it.

#3095835 - 09/17/10 06:20 PM Re: Interesting article about "No allowance shooting" [Re: Josh Echo]  
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DocW Offline
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Originally Posted By: Josh Echo
I think it's starting to drop a bit by then, although I do agree that the writer in the posted article is probably overemphasizing it.


I'd reckon you get a curved profile because of the decelerating of the ammunition from muzzle velocity after leaving the muzzle.

Michael.

#3095844 - 09/17/10 06:31 PM Re: Interesting article about "No allowance shooting" [Re: Damocles]  
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Josh Echo Offline
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Mhm, that and gravity.

#3095852 - 09/17/10 06:43 PM Re: Interesting article about "No allowance shooting" [Re: Damocles]  
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Wishing I was in the La Cloche
Yes, the author even states that things have been simplified for illustrative purposes...

Interesting article, thanks.

Now, where's my Dolphin! I want those 2 Lewis' mounted on the roll bar back!!!
Really though, it would be nifty if at least one Lewis was a load-out option.



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#3096299 - 09/18/10 09:17 AM Re: Interesting article about "No allowance shooting" [Re: Josh Echo]  
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Originally Posted By: Josh Echo
Originally Posted By: Vanderstok
" The bullets will leave the gun and at first go straight ahead, but after a second or so they will start to curve downward."
That's cartoon physics! LOL!


I'm not so sure; he may be right. How far has a bullet travelled after one second?


He's wrong, albeit probably deliberately for simplification purposes. Gravity is a constant, and acts on the bullet regardless of its speed. Fire a bullet horizontally at the same time you drop one from the same height, they'll hit the floor at the same time.

Bullets are actually fired in a slight upwards direction, usually. The zero distance is the point at which the bullet drops down through your line-of-sight to the target. They fly a parabollic arc, not a straight line forwards that then tails off downwards.

#3096301 - 09/18/10 09:22 AM Re: Interesting article about "No allowance shooting" [Re: Masaq]  
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DocW Offline
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Originally Posted By: Masaq
Originally Posted By: Josh Echo
Originally Posted By: Vanderstok
" The bullets will leave the gun and at first go straight ahead, but after a second or so they will start to curve downward."
That's cartoon physics! LOL!


I'm not so sure; he may be right. How far has a bullet travelled after one second?


He's wrong, albeit probably deliberately for simplification purposes. Gravity is a constant, and acts on the bullet regardless of its speed. Fire a bullet horizontally at the same time you drop one from the same height, they'll hit the floor at the same time.

Bullets are actually fired in a slight upwards direction, usually. The zero distance is the point at which the bullet drops down through your line-of-sight to the target. They fly a parabollic arc, not a straight line forwards that then tails off downwards.


that was what I meant with my deceleration remark. If you watch the bullet flying fom the side, a curve appears. It results from the constant vector of the gravity and the declining vector of velocity. Initially, you have a small vector pointing downwards and a long one to the left, at the end you have a small one pointing left and the one pointing down remains the same. Watched from the side-view while moving results in a curve (maybe not exactly the one he drew, but close enough).

EDIT: Not sure if that example is applicable here, but watch water coming from a hose in side view. Should be about the same.

Michael.

Last edited by DocW; 09/18/10 09:27 AM. Reason: brilliant thought
#3096319 - 09/18/10 11:46 AM Re: Interesting article about "No allowance shooting" [Re: Damocles]  
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Don't make too much of my remark. It's just that when I read that sentence I had to think of Wiley E Coyote, running of a cliff, hanging in the air for a second and then falling straight down! smile

It's a great article in that when you've read it, it is easily understood what no allowance shooting is.

#3096326 - 09/18/10 12:33 PM Re: Interesting article about "No allowance shooting" [Re: Vanderstok]  
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Originally Posted By: Vanderstok
Don't make too much of my remark. It's just that when I read that sentence I had to think of Wiley E Coyote, running of a cliff, hanging in the air for a second and then falling straight down


Ha ha, I get it. I was mentally reading his remark as "after a second, the bullet starts to drop noticeably." I thought that you were implying that the bullet shouldn't have significantly dropped after one second. I understand that bullets begin to drop the moment they leave the barrel.

#3096328 - 09/18/10 12:41 PM Re: Interesting article about "No allowance shooting" [Re: Damocles]  
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A bullet obviously is not an airfoil-when it leaves the barrel of a gun it immediately begins to drop and sights are adjusted to compensate for this.

A typical 7.62 mm, 150 grain bullet that's sighted to hit a target dead center at 200 yards will hit the same target 2 inches high at 100 yards, 8.5 inches low at 300 yards, 25 inches low at 400 yards and 51 inches low at 500 yards. The sights are obviously adjusted to shoot the bullet in an arc which increases the effective "useful" range of the projectile.


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