Does anyone know of a good website or book that has all of the ballistic equations relating to rifle ballistics? I am trying to enter them into excel to develop a program I can download into a calculator, so I will need them in basic form not just an explanation of them like many sites and books ive found. If anyone knows of any sources having these, pleeeaaaase respond. I have been looking forever for the equations.
Ballistics Equations?
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This site is not complete but it does contain some good formulas and examples. Plus it gives some explanations on coeficients, variable meanings and interdependence.
http://www.eskimo.com/~jbm/ballistics/ballistics.html
http://www.eskimo.com/~jbm/ballistics/ballistics.html
sorry this is a bit late spoon
it's quite complicated to model a trajectory very very accurately because there are a lot of variables. I don't know the equation of motion off the top of my head.
an intermediate physics book will give you the trajectory only affected by gravity, which is a poor approximation for long range shooting because the bullet is slowed by drag.
what you could do though is fire a group at 100m increments from 100 to say 1000m, plot the elevations against range in excel and then find the equation of the best find trendline through them. make sure there isn't any wind because that will affect the elevation of the bullet also (not just blowing it left and right).
it's quite complicated to model a trajectory very very accurately because there are a lot of variables. I don't know the equation of motion off the top of my head.
an intermediate physics book will give you the trajectory only affected by gravity, which is a poor approximation for long range shooting because the bullet is slowed by drag.
what you could do though is fire a group at 100m increments from 100 to say 1000m, plot the elevations against range in excel and then find the equation of the best find trendline through them. make sure there isn't any wind because that will affect the elevation of the bullet also (not just blowing it left and right).
also, that website SpEcTeR gives is really good, but it doesn't model the fact that a crosswind pushes the bullet up or down because it's spinning.
good to see that some people take a mathmatical approach to it. most people think that there's no way any bullet falls about 5m in it's first second of flight if fired horizontal.
good to see that some people take a mathmatical approach to it. most people think that there's no way any bullet falls about 5m in it's first second of flight if fired horizontal.
yeah i had that arguement about a bullet dropping 4.9m in the first second with my old bos... he thought his .30-06 would drop 3" @ 1400y with his 100 or 200y zero
i guess you oculd do 100m incerements but this kind of stuff shorter ones will give you better results
sorry to make this all more complicated however keep in mind that the ballistic coefficeint changes between certain velocities so have fun...
you can do a google search and find plenty of free software or sites that can give you some basic trajectory stuff not sure how accurate they are
i guess you oculd do 100m incerements but this kind of stuff shorter ones will give you better results
sorry to make this all more complicated however keep in mind that the ballistic coefficeint changes between certain velocities so have fun...
you can do a google search and find plenty of free software or sites that can give you some basic trajectory stuff not sure how accurate they are
Try these for a start.
http://yarchive.net/gun/external_ballistics.html
I think the Hatcher Notebook includes several. Other than that, I've seen several recommendations for the8
http://www.realguns.com/books/review8.htm
http://www.realguns.com/books/review19.htm
http://www.realguns.com/books/review28.htm
http://yarchive.net/gun/external_ballistics.html
I think the Hatcher Notebook includes several. Other than that, I've seen several recommendations for the8
http://www.realguns.com/books/review8.htm
http://www.realguns.com/books/review19.htm
http://www.realguns.com/books/review28.htm
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