Duplex VS Mil Dot reticle
Disclaimer: I am not an "expert", but shoot my fair share of long range and steel matches with a bolt gun. After talking with a lot of people that do the same I think the following is some good basic information.
Hopefully some of the other experienced long range scoped rifle shooters will chime in with their information.
Opinions are varied. Mostly it comes down to what one is comfortable using, and what you have to know and remember to get the most out of the reticle you use. These days it goes without saying that if the option to have the knobs and the reticle both MOA or both MIL, it's better to do so. Not all scope manufacturers offer that option. It's not a deal killer, just nicer to have.
There are literally dozens of reticle choices depending on who you get a scope from. Most are variations on a theme and offer more or less detail depending on the needs of the shooter. When it comes to MOA reticles pretty much the only choice is lines. With MIL you can have either lines or dots. Lines are exactly that, whereas dots are circles and ovals of specific size, but centered at the same place as a MIL line would be.
The Nightforce NP-R1, a MOA reticle.
The Nightforce MLR, a MIL reticle.
Since by volume Leupold is probably the largest, their TMR, a MIL reticle.
With MIL dots there are 2 types. The Army dot, and the USMC dot.
Whether MIL or MOA, the reticle is not used just for ranging, but also for "holding over/under" for elevation, or "holding off" for windage instead of dialing the knobs. This is most useful when engaging targets at different ranges in rapid succession, or when making multiple quick shots in changing wind conditions.
Some people will ask, "Which reticle gives better accuracy, or the ability to make a finer compensation for adjustment?"
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