Seems dangerous shooting a lead ball up in the air and not knowing what or who it's going to land on if you miss the squirrel. I have done it many times before in my youth, but as I get older I think about such more. My gut feeling is a 45 grain weight rb or less might not cause damage if it landed on a person from a high angle, does anyone have real data one way or the other? There are some places remote enough it's not an issue, but they are shrinking everyday.
James
There's a ballistic rule of thumb called 'Journee's Rule' that says for a roundball, no matter what muzzle velocity it leaves the barrel or its angle of departure, its maximum range is going to be (in yards) 2200*ball diameter (in inches). So for a .350RB, it's going to come down within 770 yards of you (maybe a little more, depending on wind).
As to velocity and energy when it comes down, if you shoot upwards at a steep angle at a squirrel, the ball will leave the muzzle with mostly vertical velocity, be slowed by both air drag and gravity. At zero vertical velocity, it heads back down being accelerated by gravity and slowed by air drag. When drag becomes equal to gravity forces, it continues to the ground at its terminal velocity. For a .350RB, that ought to be real close to 200fps. A 64 gr, .350RB should impact the ground with less than 10 ft lbs of energy. I have a ballistics program that matches the Lyman ballistics table pretty well. It says for a .350RB fired at a 60 degree angle wrt the ground at 1500 fps MV, it will come down 1900 feet away at 200 fps velocity, 6 ft-lb energy.
For a .40, the max distances and energy would be a bit more (impact 204 fps, 9 ft lb energy), for .32 less (impact at 180 fps, 3ft-lb).
SCL