shooting UP or DOWN, expert backs me up!

[devonhunter]

Right. This will give you lot something to ponder about

https://m.youtube.com/watch?v=zWYcsRr7T6E

There is a lot to take in and it all makes sense to me so I do believe this has proved the fact that POI will change at differing angles.

[eboswan]

The old question of where to aim when shooting up or down hill regularly rears its head. It seems that many hunters understand that shooting at a steep angle changes the point of impact, but can't remember why or in which direction.

The correct answer is to hold lower than normal when shooting steeply up or down hill at long range. (At gentle angles you can ignore the problem altogether over the maximum point blank ranges of hunting rifle cartridges.)

This seems odd to many, and they insist on making the problem more difficult than it needs to be. But the reason is simple. Trajectory, the bullet's flight path, depends on the horizontal (level) range to the plane of the target, not the line of sight range up or down hill. Your eye sees the line of sight (slant) range from your position to the target, which is longer than the horizontal range.

Remember that it is gravity working on the bullet during its flight time that causes it to drop. If you were to shoot straight down, say from a tethered balloon, the bullet would have no curved trajectory, it would travel toward the earth in a straight line, just as if you simply dropped it. Likewise, if you shoot straight up, the bullet travels up in a straight line until its momentum is expended. Again, there is no curved trajectory.

You can infer from this that the farther from the level position a rifle is held when a bullet is fired, the less the bullet's drop will be over any given line of sight distance, whether it is fired up or down. Since your sights are set to compensate for bullet drop, and there is less bullet drop when shooting at an up or down angle, you must hold lower than normal to maintain the desired point of impact. For example, if you are shooting up or down at a 40 degree angle and the line of sight range is 400 yards to the target, the horizontal range is only 335 yards. 335 yards is the distance for which you must hold.

[poguemahone]

simple enough to work out the holdunder using the following equation.
distance x velocity + angle x calibre - 50% of your height + 10% of your weight, divided by ambient air temperature x tuesday = holdunder.
simple enough to remember, and its usually accurate to about a foot @ 40yds.
all this argueing about shooting up or down is enough to send you mental, well thats what dave the wardrobe told me

[raygun]

simple enough to work out the holdunder using the following equation.
distance x velocity + angle x calibre - 50% of your height + 10% of your weight, divided by ambient air temperature x tuesday = holdunder.
simple enough to remember, and its usually accurate to about a foot @ 40yds.
all this argueing about shooting up or down is enough to send you mental, well thats what dave the wardrobe told me

Did all of that on a high target today.



Missed

ATB
Ray.

[poguemahone]

simple enough to work out the holdunder using the following equation.
distance x velocity + angle x calibre - 50% of your height + 10% of your weight, divided by ambient air temperature x tuesday = holdunder.
simple enough to remember, and its usually accurate to about a foot @ 40yds.
all this argueing about shooting up or down is enough to send you mental, well thats what dave the wardrobe told me

Did all of that on a high target today.



Missed

ATB
Ray.

you havent missed ray, the pellet will hit the target tomorrow, as i forgot to factor 1 orbit of the earth into the equation

[eboswan]

simple enough to work out the holdunder using the following equation.
distance x velocity + angle x calibre - 50% of your height + 10% of your weight, divided by ambient air temperature x tuesday = holdunder.
simple enough to remember, and its usually accurate to about a foot @ 40yds.
all this argueing about shooting up or down is enough to send you mental, well thats what dave the wardrobe told me

Did all of that on a high target today.



Missed

ATB
Ray.

you havent missed ray, the pellet will hit the target tomorrow, as i forgot to factor 1 orbit of the earth into the equation

[Blackbaronfish]

I think you got the day wrong....easy mistake

BBF

[raygun]

Where's the "Smacking head" smiley ?



ATB
Ray.

[poguemahone]

I think you got the day wrong....easy mistake

BBF

well spotted ray, saves me having to re calculate it all again for raygun

[raygun]

I'm not listening to you anymore.

It cost me a point



ATB
Ray.