Can anyone please explain the proper way to enter data into the "Cal. Mag" field in Chairgun?
"Cal. Mag" meaning in Chairgun
- Thread starter marcella69
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Calibration Magnification:
SFP (Second Focal Plane) variable power scopes have a calibration magnification at which the mildot readings (or other angular measurements) are true. Most of the time in the case of mildot reticles this is either 10x or 20x. Your vendor can tell you what the calibration magnification is for your particular scope.
This term does not apply to FFP (First Focal Plane) scopes because a mil is a mil at all magnifications in an FFP variable.
Neither FFP nor calibration magnification apply to fixed power scopes because they are always at their "true" or calibration magnification.
SFP (Second Focal Plane) variable power scopes have a calibration magnification at which the mildot readings (or other angular measurements) are true. Most of the time in the case of mildot reticles this is either 10x or 20x. Your vendor can tell you what the calibration magnification is for your particular scope.
This term does not apply to FFP (First Focal Plane) scopes because a mil is a mil at all magnifications in an FFP variable.
Neither FFP nor calibration magnification apply to fixed power scopes because they are always at their "true" or calibration magnification.
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Thanks for that, oldspook 
. I have the Cal. Mag set for 10x in Chairgun for my Hawke Sidewinder 4-16x50 IR SFP scope. This must be correct because my field tests match the Chairgun hold-offs. (I keep the mag set at 10x.)
. I have the Cal. Mag set for 10x in Chairgun for my Hawke Sidewinder 4-16x50 IR SFP scope. This must be correct because my field tests match the Chairgun hold-offs. (I keep the mag set at 10x.)Upvote 0
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If you select that scope in the drop down menu you will not need to fill in that field. Chairgun is designed specifically to support Hawke products so it will give you better information if you select that scope under the "Hawke Scopes" drop down. It will also draw better reticle views and all the support apps will work better."marcella69"Thanks for that, oldspook
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That's exactly what I did, and I see that the software automatically filled in 10x for Cal. Mag. Thanks, I think I understand the optics and ballistics involved now .
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Thanks for that, DuncanHynes . I checked the power wheel and there is no dot, but I'm sure the Cal. Mag is 10x for my scope. Thanks for everyone's help!
. I checked the power wheel and there is no dot, but I'm sure the Cal. Mag is 10x for my scope. Thanks for everyone's help!Upvote 0
a little more help please....i got a bushnell 4200 elite 6-24x40 with true milldots at 12x ...what do i set indicated mag at ....and what do i set calibrated mag at `?
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Indicated mag is what you manually have the mag set to. Cal mag, sometimes called Ranging mag, is specific to your scope. From what you say above it should be 12x.
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