Rifle Scopes newbee help
- Thread starter jmr44
- Start date
Re: newbee help
FFP = front or first focal plane, ( in effect, with a first focal plane optic, the reticle gets larger as you increase the variable power and shrinks when you decrease the variable power. so that, the reticle image , always covers/subtends the same distance, regardless of power setting)
by definition all fixed power scopes are first focal plane .
sooo, in contrast, a second focal plane optic has one spot in its focal power range that allows the reticle to be used for measurement by the shooter; typically this is the highest power setting.
the reticle does not shrink or grow larger; and if you forget to dial 'up' to the proper setting for MILLING a target, the range to the target you figure will be OFF
mil/mil reticle is a mil-radian reticle (ie., mil-dot ) AND
the scopes elevation /windage adjustments or clicks are in mil's as well or really some fraction of a whole mil-radian
FFP = front or first focal plane, ( in effect, with a first focal plane optic, the reticle gets larger as you increase the variable power and shrinks when you decrease the variable power. so that, the reticle image , always covers/subtends the same distance, regardless of power setting)
by definition all fixed power scopes are first focal plane .
sooo, in contrast, a second focal plane optic has one spot in its focal power range that allows the reticle to be used for measurement by the shooter; typically this is the highest power setting.
the reticle does not shrink or grow larger; and if you forget to dial 'up' to the proper setting for MILLING a target, the range to the target you figure will be OFF
mil/mil reticle is a mil-radian reticle (ie., mil-dot ) AND
the scopes elevation /windage adjustments or clicks are in mil's as well or really some fraction of a whole mil-radian
Re: newbee help
Mil/Mil doesn't describe the reticle. It means a scope having a mil reticle and mil knobs so the reticle and knobs match. This is preferable as you can spot shots with the reticle and dial on a correction and also so you only need one set of data for dialing on the scope and for your reticle holds.
FFP is short for first focal plane. Means that the scope's reticle subtends correctly no matter what power it is set on. This means if you need to use the reticle for holds or ranging it can be done on any power without having to worry about conversions. The reticle appears to grow and shrink as the power is turned up or down but it doesn't. It is staying the proper sub tension in correlation to the target.
Mil/Mil doesn't describe the reticle. It means a scope having a mil reticle and mil knobs so the reticle and knobs match. This is preferable as you can spot shots with the reticle and dial on a correction and also so you only need one set of data for dialing on the scope and for your reticle holds.
FFP is short for first focal plane. Means that the scope's reticle subtends correctly no matter what power it is set on. This means if you need to use the reticle for holds or ranging it can be done on any power without having to worry about conversions. The reticle appears to grow and shrink as the power is turned up or down but it doesn't. It is staying the proper sub tension in correlation to the target.
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