Range Calculations

General firearm discussions that do not fit in our specific firearm-related forums.
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Japhy
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Range Calculations

Post by Japhy »

Last week over coffee following a morning at the range the range buds and I were discussing technique. So the engineers in the group did a classic back of the napkin calculation the answer was eye opening!

If the pistol is 10in in length grip to muzzle at a range of 25 yards a deflection of the muzzle by 1/10 inch due to any number of bad technique errors results in an impact at 25 yards skewing 9 inches!

Eyes wide open and dont move!
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GrapeApe
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Re: Range Calculations

Post by GrapeApe »

The amount of movement to change the POI 1" @ 100 yards is shockingly small as well. It's 3:50am and I can't remember it off the top of my head, but it's TINY
"Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it." - Samuel Clemens (aka Mark Twain)
Diver43
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Re: Range Calculations

Post by Diver43 »

So at 100 yards your hitting the target next to yours?
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Castle
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Re: Range Calculations

Post by Castle »

It doesn't take much. That's why good technique is so important.
When it hurts – observe. Life is trying to teach you something... Your pain is the breaking of the shell that encloses your understanding.
Wambli Ska
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Re: Range Calculations

Post by Wambli Ska »

When you run the math it’s amazing you can shoot good groups at all, especially considering ALL the other variables.
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CPJ 2.0
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Re: Range Calculations

Post by CPJ 2.0 »

Wambli Ska wrote: Fri Mar 21, 2025 2:10 pm When you run the math it’s amazing you can shoot good groups at all, especially considering ALL the other variables.
Indeed. It comes down to the human body is capable of crazy things. Just a little bit of machining work and comparing things and you can calibrate your “eyecrometer “ to see differences of .005 of an inch.
“The shepherd slaughters more of the flock than the wolf ever will.”
Wambli Ska
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Re: Range Calculations

Post by Wambli Ska »

CPJ 2.0 wrote: Fri Mar 21, 2025 2:51 pm
Wambli Ska wrote: Fri Mar 21, 2025 2:10 pm When you run the math it’s amazing you can shoot good groups at all, especially considering ALL the other variables.
Indeed. It comes down to the human body is capable of crazy things. Just a little bit of machining work and comparing things and you can calibrate your “eyecrometer “ to see differences of .005 of an inch.
That is truly amazing.
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