Ok here's the maffs and the answer is stupid.
If you use 1500fps steel shot and shoot at 45 degree angle...
It takes a bit over 20 seconds for the pellet to return to earth assuming you're on level ground.
This means it can carry 3 miles.
No way that's right I must be forking up good.
20 seconds times the initial x Velocity.
Yeah you separate motion into components of x or y.
Initial x Velocity is 1500 cos 45.
Initial y Velocity is 1500 sin 45.
Solve for the y equation and apply to the x.
I must've really fucked up.
If it was a cannon ball this math is right.shotgun is not a cannon. 3 miles tho?
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Not using metric sucks. I had to guess and remember G in English.
I "think" G = -32 feet per second squared. Grabbitty.