gun angle

I posted this is a couple of sci groups, but they're full of kids.
Anyone have a empirical answer to this? Here's the post:

If you shoot a 22 rifle straight up, the bullet returns to earth at
Vv, whatever that is. What is the minimum elevation of the
rifle to insure that the forward velocity of the bullet, Vh, is
no greater than (close to) Vv when it hits the ground; a speed
that doesn't have a good chance of hurting anyone. No
hills, just level ground all around.

With an elevation of zero, the rifle parallel to the ground, I suspect
Vh is a good percentage of the muzzle velocity when the bullet hits.

I just need a general answer to this.
Be off by xx%? This is not a homework assignment. I know
that this must be a complicated question, because everyone
refuses to answer it.... after telling me how smart they are.
Maybe it can't be answered, maybe it can only be measured.

What info I have. Velocity is around 1,138 fps and the round is
about 40 grains

Thanks



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Relevant Pages

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