Uphill/downhill.

[243varmint]

Interesting link by jingzy. think we wre talking about this only the other evening bandit country. spooky eh
Jonathon

 

[charadam]

Let us not forget sight axis height above bore axis.

The moment a bullet leaves the muzzle it is "ballistic" - in other words, subject to gravity and will accelerate towards the centre of the earth at 32 feet per second per second throughout its trajectory.

As if shooting uphill wasn't hard enough!

And of course, at serious long range, you have to allow for the earth's rotation (taking latitude into account, of course).

 

[Bandit Country]

Charles,

When we start managing deer with 155mm Rocket Assisted, Extended Range, Base Bleed rounds, I will retire gracefully from the sport and let the nine-mile snipers get on with it!

 

[charadam]

Bandit - don't do that!

I have filled a keyboard with single-malt mingled snot.

Thank you.

 

[Blodwen Price]

I was always lead to believe that if you were shooting at a deer, or anything else for that matter downhill at about 45 degrees you would need to shoot for the top of the shoulder as against the heart, as gravity pulls down on the bullet, (common sense would tell you this) but when you shoot at the same deer at 45 degrees uphill you would say shoot at nearer the bottom of the heart, as the bullet would rise

Those aiming points are about right but NOT because of gravitational effect. In the case of shooting a deer at those angles the different aiming points are to ensure that, as the bullet is travelling diagonally through the beast, it still goes through the heart on it's way. Obviously shooting downhill is more likely than uphill but the principle is the same, you have to judge how high/low you aim to ensure you get the heart shot.

Edited to add "Johnny aged 5" drawing, to try to explain what I was unable to do in words