Bushnell 65-4305M Owner's Manual - Page 8
Yardage Marks on, Side Focus Knob Scale, Index Line
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Yardage Marks on Side Focus Knob Scale Index Line ABOUT RETICLE FOCAL PLANES Variable power riflescopes may have their reticles located in either the first focal plane (in the section nearest to the objective lens), or in the second focal plane (nearer to the eyepiece or ocular lens). This location determines how the reticle will behave relative to the target when you change the scope's power (magnification). If your scope's reticle is located in the first focal plane, the size of the reticle will appear to increase or decrease when you increase or decrease the scope's power (using the zoom ring), just as the target itself does. If the reticle is in the second focal plane, the reticle always appears at a constant size and does not follow your changes in power-only the apparent size of the target changes. This is especially significant in riflescopes with mil dot or other range estimation type reticles. A first focal plane reticle may be more convenient, as it allows you to use the guide marks at any power you select. A second focal plane reticle can only be used for range estimation at a single power setting, the one it has been calibrated for (unless you do a little math, as described later in this manual). You can of course use the scope crosshairs at any power for accurate shooting-however you will only get accurate distance estimation by using the ranging marks at the calibrated magnification. USING MIL DOT RETICLES Your Bushnell Tactical riflescope contains a mil-dot reticle (1st or 2nd focal plane, depending on the model), the most accurate means of range estimation using a manual optical device. These mil dots also allow precise leads for moving targets and exact compensation for shooting in a crosswind. RETICLE DESCRIPTION The middle of this reticle contains four evenly spaced mil-dots arrayed outward vertically and horizontally from the center. Actually, because the very center dot was left out to allow clear aiming, the reticle represents five mils in any direction - ten vertical mils - as shown in the illustration. Note that the most outward dot is replaced by the edge of the heavier reticle line. One mil is the space from center-dot to center-dot. One-half and one-quarter mils are easy to estimate mentally; with practice, you can measure tenths of mils for the most exact ranging.