Shooting downhill math problem????

[mikecr]

I am using sierra .243 dia. (6mm) 90 gr. FMJBT at about 2400 fps

To hit 350 accurately on a flat range I need to make 24 clicks up witch equals 6 inches ( each click is 1/4 moa. ).
In order to hit 350 on the down angled range I need to adjust up 8 clicks witch equals 2"

And you said you have a 100yd zero.
Your numbers are nowhere close to right.
Have you laser ranged this stuff?
Measured MV?

For other responders; You don't want to use the Rifleman's rule(applying all else equal to slant distance) for angle shooting.
You need to have software adjust bullet PATH.
Ref: http://www.exteriorballistics.com/ebexplained/article1.html

 

[zippyhuntin]

The OP never stated what scope he was using. It's possible that it adjusts in 1/4" increments, and not in MOA.

 

[6MMFAN]

I am using sierra .243 dia. (6mm) 90 gr. FMJBT at about 2400 fps

To hit 350 accurately on a flat range I need to make 24 clicks up witch equals 6 inches ( each click is 1/4 moa. ).
In order to hit 350 on the down angled range I need to adjust up 8 clicks witch equals 2"

And you said you have a 100yd zero.
Your numbers are nowhere close to right.
Have you laser ranged this stuff?
Measured MV?

For other responders; You don't want to use the Rifleman's rule(applying all else equal to slant distance) for angle shooting.
You need to have software adjust bullet PATH.
Ref: http://www.exteriorballistics.com/ebexplained/article1.html

The OP never stated what scope he was using. It's possible that it adjusts in 1/4" increments, and not in MOA. (answer below)

All this info is great keep it coming.....

Correction tho the FPS should have been " around 2900"

I am definitely zero'd at 100 ; I use a leupold VX-3 6.5-20x40mm EFR Target with the target dot reticle.

I recently sent the scope to leupold for a repair and asked them to make sure it was in top working condition. They sent me a letter confirming it was.

I have laser ranged from the target back to the shooting point and reverse. I have also checked to make sure the range finder is accurate.

Thanks

6

 

[Lapua40X]

To hit 350 accurately on a flat range I need to make 24 clicks up witch equals 6 inches ( each click is 1/4 moa. ).
In order to hit 350 on the down angled range I need to adjust up 8 clicks witch equals 2"

I'm wondering if you're getting confused with the MOA math calculations.
8 clicks on a 1/4 MOA scope does in fact equal 2 inches, at 100 yards - but at 350 yards it equals 7 inches (.25x8x3.5)

 

[brian427cobra]

7.329 inches is the correct answer

 

[Nomad47]

1 MOA equals 1.0472" AT 100 YARDS. Older Sightrons were inches per 100 yards, newer ones are MOA. [And I apparently got a Sightron in transition because when I cranked up the turret 10 MOA and shot at 100 yards, POI went up exactly 10" and not 10.47".] The OP stated he had a Leupold and I believe Leupolds adjust 1.05" per hundred yards.
Anyway, at 350 yards, there is not enough difference between MOA and inches. If you confused one for the other, you would still be within .5 MOA.
The OP stated he was zeroed for one hundred yards. Then he went on to state he needed 6 (inches or MOA - it really doesn't matter) to hit the target at a level 350 yards. Then he stated he needed 2 (of the same thing) to hit a downhill target at 350 yards. And he asked what the downhill angle must be. And he got his answer.