Originally Posted by KPB71
SBruce, what is IPHY? Im still trying to figure out Mil Dots and how they work.Thanks everyone for there help
Inch per hundred yards is very similar to moa or minute of angle, and sometimes refered to as "shooters moa".
A true minute of angle covers 1.0472" per hundred yards. some scopes (not all) take 4 clicks to supposedly move point of impact one moa. one moa = 10.472" at 1000.
IPHY is exactly 1" per hundred yards.......drop the .0472 BS. 1" at 100 covers 10" at 1000. Some scopes supposedly move the poi in 1/4 IPHY (4 clicks = 1").
Very close to true moa except for long distance and/or moving the adjustments by alot of clicks.
Mil is milliradian and covers 3.6" per hundred yards, or 1yard at 1000 yards.
One mil also equals 3.438 moa. some scopes have 1/10" mil adjustments (takes 10 clicks to move poi one mil).
IPHY is surely the easiest to use for quick calculations in the field. Especially since we think of our targets and drops/drifts in terms of inches, not yards.
I say suposedly on the scope clicks, because I've lost count of how many scopes I've seen that didn't move the poi exactly the advertised amount. Some are way off of what they should be.