Originally Posted By: tugboaterFor long range 800 to 1000 and beyond, I would go mil at 1/10 instead of Moa at 1/4 adjustments.it's a lot more precise. But that's just me... Front focal plane with mil retical and mil turrets.
I love the GREAT information on this site sometimes. Please check into this before posting. You could not be more wrong...
Speaking in "easy" terms and leaving off long decimals 1/4 MOA is ~.25 inches at 100 yards. 1/10 "Mil" radian is ~.36" at 100 yards. Just because the fraction is smaller doesn't mean the value is smaller...
Other than "the military uses it"; the main reason most guys like "mils", which is really "milliradian" is because the metric system is easier. It's based on 10 verses 4, 6, 12 or some other number that's hard to divide in your head. Yet most carpenter, workers, and even laymen in the US still like/use/prefer feet, inches & the fraction of inches verses meters, decimeters, centimeters & millimeters (all decimal or factions based on 10, which is "easier"). If you still use inches, feet, yards instead of meters, you can still be OK with MOA scopes...
Mils to MOA is the exact same thing as meters to yards; exactly... No not the same measurement of length, the exact "base" of measurement. MOA is "minute of angle", based off the English measurement of a degree. You know, 90 degrees is straight up & down, 45 degrees is a perfect slant. Well one radian is most near 57.296 degrees. As you likely know in the metric system; deci is .1 (1/10), centi is.01 (1/100), & milli is .001 (1/1000) of a unit. So one milliradian (mil as it's called) is .001 radian. So to convert that to English, 57.296 degrees (one radian) divided by 1000 is equal to .0573 degrees. To get that down more precise for shooting, they break the down in tenths because .0573 degrees (1 mill) is still ~3.6" (3.594" to more precise). So 1/10 "mil" or .1 milliradian is really .0001 of a radian (or .0001 times 57.296 degrees=.00573 degrees).
Now, for the English units, I'm sure you know that one degree is 60/60 minutes (again, here is those hard to divide odd number denominators, a 6 instead of a 10). And 1 minute is 60/60 "seconds" (no not talking about time, we're talking angles still). So 1/4 of a minute is also 15/60 seconds (15 is a quarter of 60) or .0042 degrees (.25/60 minutes).
So there we have converted one tenth mill radian & 1/4 MOA to decimal value of "degrees" --- .00573 verses .00420. At 100 yards this converts to .358 inches & .262 inches. Similar triangles says that at 1000 yards (hear we are finding it easy to multiply & divide by 10) shows that one "click" in a MOA scope moves you 2.6" (if your gun is a laser & shoot one hole groups that far) and .1 "mil" moves you 3.6" at 1000. Again, it's easy to see the MOA scope is more precise although not in the popular belief...
The ONLY advantage of a "mil" scope (unless your ranging in meters & not yards) is that you can talk in shorter decimal or easier fractional values of a whole. If you know how to speak in fractions of 4 and usually base your ranges on yardages, nothing wrong with MOA and may be better (again contrary to popular belief).
Yes most PRS guys have switch to "mils" but it amazes me the competitions still give ranges in yardages. It's just bass ackwards...