Re: Heads up on leupold scopes (MOA vs IPHY)
I have a friend, now retired, who was an engineer at Leupold. He states that since day one the sporting scopes were set up to adjust in MOA. It is the only internationally accepted unit of angular measurement. The mil adjustments came latter.
Just guessing the tech line guys have very limited knowledge to do their jobs. That is to determine if your scope is broken or to read the manual to us over the phone.
Something to consider.
Assuming one of the least likely choices for long range hunting but still used. The 308 Win using 168 grain FGMM ammo.
At 500 yards 12.5 MOA x 1.0472 x 5 = 65.45” drop
IPHY 12.5 x1” x 5 = 62.5” drop. 2.95 inches of drop difference.
Not much on big game.
At 1000 is states correction in MOA to get to 1000 yards is 41.5 MOA x 1.0472" = 43.4588" elevation x 10 = 434.59 inches of drop
If you used 41.5 IPHY x 1” x10 = 415” drop
This makes a drop difference is of 1.9588" x 10 = 19.5” drop difference.
On a .308 Win. At 1000 yards this is a 19.5” difference in drop. Enough to cause a big miss. On a flatter shooting gun it’s much less.
Reason for correction.
Corrected my math.
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Last edited by edited by; 08-08-2012 at 08:32 PM.
Reason: Corrected my math.