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distance calc?

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distance calc?

Unread postAuthor: grock » Fri Feb 27, 2009 10:33 pm

is there an internet/downloadable calc for finding the approximate distance a gun can shoot? or a formula that can calculate distance from weight of ammo, angle, fps? or just some really smart guy reading this?
in any event, im shooting a 100g potato about 500 fps, or a 80g potato about 300 fps

EDIT: im guesing 45* would be optimal, but if its not, whatever the optimal shooting angle is
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Last edited by grock on Fri Feb 27, 2009 11:16 pm, edited 1 time in total.
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Unread postAuthor: trigun » Fri Feb 27, 2009 10:37 pm

Grock, lets see here give me 10 min or so

EDIT: i need an angle measurement

hangtime- 100gram ~ 31.06 seconds
- 80 gram~ 18.34 seconds
- assuming perfect straight up and down shot ignoring air resistance
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Unread postAuthor: mark.f » Fri Feb 27, 2009 11:21 pm

Yeah, GGDT has a range calculation for pneumatic guns.
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Unread postAuthor: grock » Sat Feb 28, 2009 12:35 am

well, im not sure if im suing the same application as you guys, but mine dosnt have a distance thing excapt on the x axis, and when i do that, ive got something weird on the y axis, like acceleration

edit: found "projectile pos" (assuming that means position) but it seemd to stop at 62 inches, which seemed wrong
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Unread postAuthor: SubsonicSpud » Sat Feb 28, 2009 5:17 am

grock wrote:well, im not sure if im suing the same application as you guys, but mine dosnt have a distance thing excapt on the x axis, and when i do that, ive got something weird on the y axis, like acceleration

edit: found "projectile pos" (assuming that means position) but it seemd to stop at 62 inches, which seemed wrong


You are not looking in the right spot. Go to the Tools menu, then External Ballistics Calculator. The graph you are looking at is used to plot variables whilst the projectile is in the barrel. Have a look at the GGDT website you will learn how to use it properly then.

Cheers
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Unread postAuthor: grock » Sat Feb 28, 2009 1:30 pm

sweet. im shooting about a quarter mile. thanks guys
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Unread postAuthor: Biopyro » Sat Feb 28, 2009 3:27 pm

This is a very accurate calculator with a bunch of other functions too, which I've found to be very useful. It was created by ragnarok so all credit to him, hope you don't mind me posting this rag?

http://www.freewebs.com/fourstrings/Lau ... orV2-2.xls
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Unread postAuthor: SEAKING9006 » Mon Mar 02, 2009 7:00 pm

There was one made for the TI-83 series calculators by RCman, which I modified and made a bit more eye-friendly, plus MirageOS compatible. It's very nice.
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Unread postAuthor: rcman50166 » Mon Mar 02, 2009 7:43 pm

well well. I see someone has found my program. Could you possibly post the updated version on SF? Here is the link to the page.
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