OP
BluGrass
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I'm going to have to show my ignorance once again but what does a calibrated elevation knob do?
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Nikon P-223
- Thread starter BluGrass
- Start date
I'm going to have to show my ignorance once again but what does a calibrated elevation knob do?
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Badquaker
Member
It replaces the knob on top with direct yardage marks.
Want 300 yards, dial it up, and the cross hairs are spot on. Takes the guess work out.
ETA: nikon calls it a custom turret. You can order it on the bottom of the spot on page.
OP
BluGrass
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And this would only work with one specific round?
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78Staff
Member
Yep - Handloaders use them a lot, esp for hunting, when the dial in a specific/favorite load on a rifle.
Yes, a calibrated turret is for one specific round. However, it is calibrated for all magnifications, unlike the BDC where the yardage is dependent on the magnification. Leupold calls it the CDS (custom dial system). I have one on my 7mm mag and really like it. You can order different dials for as many different calibers, rounds, loads, etc.
Badquaker
Member
Yes, it is single cartridge specific. I have to handload, 300blk ammo can run upwards of $2 a round. Once I find a preferred round, I will either get the custom turret, or add a couple of significant marks to the existing turret.
The data provided by the spot on program is magnification specific. Change your power, and all the spots in the reticle have different values. The turret adjustment eliminates that.
The data provided by the spot on program is magnification specific. Change your power, and all the spots in the reticle have different values. The turret adjustment eliminates that.
Rastoff
US Veteran
This is correct, but doesn't really cover the whole situation.
The reticle is only calibrated at one magnification IF it's mounted on the second focal plane. If it's a first focal plane scope, then it is calibrated at all magnifications.
The turrets are always the same movement no matter the magnification. Use the turrets to adjust the cross hairs to adjust for different yardages. A ballistics table can be made for the specific load you use.
This is why a mrad(mil) or MOA marked reticle is easier to use. They are specific and can be used to range targets and then develop hold overs much easier than reticles made for specific yardages. The scopes like the P-223 are made for those that aren't looking for absolute precision and don't want to do the math.
78Staff
Member
Command decision... returned the P223, getting the M-223 2x8 instead, Nikoplex reticle. Already have a Aimpoint Micro T1 and 3x, so don't really see the need for a 1-4x. And I figured for $50 difference since they are on sale, why not upgrade to the Monarch line over the Prostaff. I like the NikoPlex over the BDC, others prefer the BDC but I like what I like, as they say.
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