I have a Nightforce 5.5-22x56. The adjustments are in MOA. I see in the owners manual I could have the turrets changed out to Mils. What is the difference and what advantage or disadvantages do they present? I will be using this scope on a 300 RUM for longrange shooting.

Andy

You have a quality scope there, but rather than listen to my ramblings, suggest you google a search on the "mil dot system" and you will learn more than you ever wanted to know. Simply put, the two are a system of measurement for distance, size of an object, etc. Mil dot systems can provide a finer division of distance, size of an object, etc. based on the size of the mil dot or divisions of same shown on the reticle of your scope. Curious if your scope requires that to utilize the moa dots the power setting should be at it's max power?? Either system is not caliber specific and only provides range/distance to target and you would need to know the ballistics of the round being used to get on target.

I do not have a "dot" reticule. I have NP-R1, which has a series of hash marks. Perhaps I should have been more specific. My current adjustments are in .25 MOA increments. 1/10 Mil "clicks" are also available.

quote:

Originally posted by drewhenrytnt:
I do not have a "dot" reticule. I have NP-R1, which has a series of hash marks. Perhaps I should have been more specific. My current adjustments are in .25 MOA increments. 1/10 Mil "clicks" are also available.

Since you have the NP_R1 reticle which is in MOA I recomend leaving your turrets as is (MOA) IMHO and experience it is much simpler for the turrets to match the reticle.

If you had a MIL reticle , then MIL turrets would indeed makes sense

Both a mil or more properly a milli-radian and MOA or minute of angle are both measure of small angles. A minute of angle is 1/60 of a degree, and a radian is 180/pi degrees or about 57.295 degrees. A milliradian is .001 x Radian.

Big advantage if knob and reticle are in same unit, say mils.

Europeasants do, but we don't have same units in our scopes.

Mils are the common method of measuring angles in the military and such a scope would appeal to a GI trained marksman. the Artillery Mil is defined as 1/6400 of a circle. this is just a hair different from a true Mil but the number was chosen for convenience so that 90 deg equals 1600mils, 180 equals 3200, and 270 equals 4800. In other words, "It's close enough for government work." Deflection and elevation (quadrant) for the guns is measured in mils. An angle of 1 mill will subtend approximately 1 meter at 1000 meters. This is a relationship that makes it much easier for an artillery forward observer to estimate deflections when calling for fire. Machinegun sights are marked in mils for the same reason.

Jerry Liles