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Retired cat herder.
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Been awhile since I've been here--love this subtension discussion. Great info! Have put in many days researching and applying subtension in the field. IMO the most important concepts are the adaptation of mil and moa math to any subtension system such as any multi-stadia reticles, iron sights and even archery sight pins for downrange zeroing, and rangefinding math.
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Campfire Tracker
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If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land. 2 Chronicles 7:14
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Agreed. The best tutorial I've seen posted
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I miss Form, hope he's doing ok.
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“Factio democratica delenda est"
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One hell of a good thread, Thanks to all.
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Enjoyed this thread as well
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Campfire Tracker
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Agreed: It should be a sticky! As soon as I got my first SWFA MQ, I saved that thread. It's the best tutorial on the subject that I've ever found.
BT53
"Where do they find young men like this?" Reporter Savidge, Iraq
Elk, it's what's for dinner....
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Agreed: It should be a sticky! As soon as I got my first SWFA MQ, I saved that thread. It's the best tutorial on the subject that I've ever found. Agreed!
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Good info in this thread.
I have used it many times as a reference.
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Campfire Ranger
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Campfire Ranger
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Pretty good information from an internet poser.
#rentfreetexas
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Now fire nine more to confirm- [Linked Image] [Linked Image] [Linked Image] From the reticle and target, dial- left .1mil to center the group. Loosen turret screws, lift off, spin and align with the "0" indicator mark. [Linked Image] Zeroing is done. No mental gymnastics, no fuss, no conversions, no weirdness. Think only in mils. Break it down into tenths visually and do not try to convert it to something else. See where the impact is with the reticle, adjust what it says, and done. Firing a statistically significant amount of rounds to see the true center of the group is important as you can easily be off .2 mil with a "1 moa all day" long rifle if you "zero" off of 3 shot groups. This is a great and informative thread. As a guy who is considering buying one of these scopes, I have a question on your resetting of the zero value after you are sighted dead on at your beginning, "zero mil" reference range: ![[Linked Image from i.postimg.cc]](https://i.postimg.cc/V6tt6WQH/SWFA-question.png) Is there a way to reset the elevations dial on this scope all the way down to the zero on the "number of turns" (or whatever you call it) scale, where it looks like it belongs? Thanks, Rex
Last edited by TRexF16; 04/09/24.
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Campfire Ranger
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Campfire Ranger
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Only way to do that would be to use a 20 MOA rail/Burris Sig inserts/etc to bring down POI.
It is irrelevant what you think. What matters is the TRUTH.
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Seems an odd design. I can see it being that way on the windage but why set up the elevation indicator that way? Looking at that it looks like the scope has already been dialed up 30 mils.
Like I said - great lesson and tutorial, I just had a question on the turret "display" not having owned an SWFA yet.
Thanks,
Rex
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Campfire Outfitter
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Campfire Outfitter
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Seems an odd design. I can see it being that way on the windage but why set up the elevation indicator that way? Looking at that it looks like the scope has already been dialed up 30 mils.
Like I said - great lesson and tutorial, I just had a question on the turret "display" not having owned an SWFA yet.
Thanks,
Rex It’s a typical revolution-indicated erector turret design, not specific to SWFA. The turret threads out with “up” adjustment, and the horizontal hashmarks indicate which revolution the turret is on. To zero the scope on the first revolution, you’d have to mount it so the erector is near the extreme bottom of its adjustment range.
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