Best Optics Post Ever!

Great article indeed,I down loaded it a few weeks ago. I always like to keep a hard copy of all of the good articles I find for reading on flights and such(or when I want to refer to something and my computer is down due to #### site viruses).
 
Very interesting read. Regarding the data card, what is the factorial of calculating MOA as you gain in distance. I'm guessing it is relative to bullet weight and FPS, but then what is the static quotient for drop in this calculation?

LH
 
There is no simple formula to calculate drop in the general case. The math is differential equations which are evaluated every 1-5 milliseconds. Inputs are atmospheric density, bullet BC, and muzzle velocity.

-z
 
Zak Smith said:
There is no simple formula to calculate drop in the general case. The math is differential equations which are evaluated every 1-5 milliseconds. Inputs are atmospheric density, bullet BC, and muzzle velocity.

-z
Click to expand...

So do you make your notes from actual shoots at the respective ranges?
Or shoot for your zeroed range (100) and adjust the scope to target greater ranges, then record the 'clicks' or moa changes relative to the brand of scope you use?

Thanks

LH
 
If you do not have technology nearby, you would zero exactly on at 100 (or whatever) and then shoot intervals to your max range and note the dope in your log book

If you have a computer available, it is easier to use a ballistics progam. Input the sight over bore distance, atmospheric conditions, zero distance, measured muzzle velocity, and bullet BC(s), and they can produce a drop table in inches, MOA, or mils. If all the parameters are accurate, the drop table should be "on" within about a click out to 1000 at least.

-z
 
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I have handled that US Optics scope, it is not a scope, it is a work of art, so I would have to agree with that article, mind you, and although it is old technology, the Unertl 10X has to be one of the most proven scopes, not in this running which I understand, but certainly sould be among the best.
 
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