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scope specifications???

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/11/2010 at 21:09
weedhopper View Drop Down
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I need some insight on what all this means. I have been reading numerous post and all seem to be very helpful. I still need clarification on FFP and SFP(1st and 2nd plane but what does each give me? What is exit pupil, highr number better? I too am intrested in mil-dot but for the math to be correct what magnification is used?  to illumininate or not? I have seen some scopes that are mildot but have MOA knobs shouldnt they be the same? what knob adjustment should I go for 1/8 or 1/4?  sorry for the elementry questions.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/11/2010 at 21:51
jonoMT View Drop Down
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A first focal plane scope has a reticle that changes size with magnification while a second focal plane scope's reticle never changes size. The advantage to an FFP reticle is that its subtensions (dots and hashes) always cover the same amount of the target, no matter what the magnification. This means you can use the reticle to range at any magnification. The scope might even be set on 7.14X and it won't matter. An SSP scope has one ranging magnification and that is usually its max. You might range at 5X on a 10X scope but you'll need to divide the final range by 2...and there's no guarantee you are really on exactly 5X.

The disadvantage of FFP is that the reticle shrinks with decreasing magnification and can get hard to see. This is offset by proper reticle design. For example, as the reticle shrinks its outer crosshairs serve almost like a duplex reticle. Also, if you need lower magnification you don't need to range. A disadvantage to an SSP scope is that if it is a high magnification model you're stuck ranging at 22X with a tiny field of view.

As for matching turrets and reticles, it's a good idea because it eliminates converting from
one system to another. If you see that you need to correct 3.1 mils you can just dial that in. Same goes for an MOA/MOA scope.

Edited by jonoMT - March/11/2010 at 21:55
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/12/2010 at 00:10
RifleDude View Drop Down
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You will find plenty of discussion on this forum about all of those topics using the "search" function.  I don't mean to sound flippant, it's just that answering all your questions would require lengthy discussions that have already taken place many times in the past here.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/12/2010 at 18:55
weedhopper View Drop Down
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Thank you.
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