precision_shooter
New member
"Hold over" is not related to scope magnification, it's ballistic-dependent. Same for any magnification...
If you really plan on holding, instead of dialing up, make sure you get a mil-dot reticle. Again, for holding over a mil-mil system would be far easier and intuitive to use. Don't be intimidated by a mil-mil system, it's not difficult to master. Just sayin... I use minute of angle because I dial, and don't range...but if that's your end game, mil-mil would better serve you.
Dope for my son's AR-10, 175 SMK, 2800 fps mv, 200 yard zero:
600 yards: 13.69 minutes
800 yards: 23.30 minutes
1K yards: 35.47
This is true, the holdover calculation doesn't change for a given load. But if using a SFP scope, Depending on your magnification setting, will determine the actual subtension measurement of your reticle and require a different hold based on that magnification.
For example, the 600 yard hold you have listed above using a 6-24x SFP scope with MOA reticle (Assuming true subtension occurs on max magnification):
When looking through the scope, 13.69 minutes in the reticle is true only at max magnification. Change the magnification down to 18x and in your reticle you only hold 10.27 minutes, 12x would be 6.85 minute hold and at 6x it's only a 3.42 minute hold all for the same 13.69 minutes of drop you are compensating for...
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