Leupold Elevation adjustment question

[Hicks]

Just got two older Vari-x IIIs back from Leupold whom I had install windage and elevation M1 turrets. The invoice has a section where they record the max adjustment in either direction. Apparently the 6.5 - 20 only has 32 up from center. They don't say what the 32 is exactly, but I'm guessing it's inches because the M1 turrets are graded in inches. Looking at my Infinity software, my 7RUM with 180gr Bergers zeroed at 100 yards has a bullet path -32" at 550 yards. Would it be correct to say that the max I could dial up and hold dead on would be 32 inches at 550 yards? My dad is telling me that I'm wrong because the "inch" elevation adjustment is only valid at 100 yards and that, for instance, at 1000 yards an "inch" adjustment moves the point of aim 10" inches because at that distance 1 moa is about 10". I think he's wrong because, regardless of the moa at a given distance, relative to 100 yards I'm still down 32" at 550 yards, and therefore I'd need to dial up 32" to compensate. Who's right?

Hicks

 

[AJ Peacock]

I'd listen to the old man 32"/5.5 = 5.8"

Mine gets smarter every year.

AJ

 

[Hicks]

I'd listen to the old man 32"/5.5 = 5.8"

Mine gets smarter every year.

AJ

Right, should have known. Now that I see the error I know I asked a pretty stupid question. Guess that's how you learn. Thanks.

Hicks

 

[CSPSgt]

AJ, thanks for the vote of confidence. After a 1/4 century of doing motor vehicle accident reconstruction I actually learned something. And, being retired for 10 years I didn't forget all of it. My last email to him earlier said just look at it as angles and vectors. At dinner tonight Hicks said he looked at a drop chart and said "Duh". Kids, pushing 40 but you still love them.

 

[Ridge Runner]

hicks, ya need to quit thinking in inches of drop, think of it as moa's
minute of angle: a unit of angular measurement equal to 1/60th of 1 degree, actualy equals 1.0473" per 100 yards of range
1.0473X2=2.0946 is 1 moa at 200 yards (4 clicks will raise POI that amount at 200)
1.0473x5.5=5.760 is 1 moa at550 yards
1.0473x 9.22=9.656 is 1 moa at 922 yards
______________^divide this number by 4 to determine how much each 1/4 moa click is at 922 yards
9.656/4=2.414" per click hope this helps
RR