Home Forums Hunting & Shooting Hunting Rifles Leupold CDS math,

The value of 4 in this example represents what?
4 clicks per inch?

when entering the values that i know, It calculates 14 inches of drop at 300,,,, That isn't what I'm seeing in the field...

Bad numbers somewhere.

Sorry bud!

It’s OK it takes a village of idiots to ruin a state.What’s one more and I don’t mean Greg W

Say 10inches of drop at 500yards.

Scope has 0.25inch clicks at 100, so at 500 each click equals 1.25inches

4 relates to the number of clicks per inch, a constant in the equation. 5 is 500yards and 10 is the drop in inches.

4/5 x 10 = 8clicks

or

10/1.25 = 8 clicks


Lean the theory and then make a chart and forget about the why.

Temperature Barometer Reading Correction Calculator
:
Link



Above Sea Level Barometer Reading Correction Calculator:

Link


Compare the two Dogshooter, Barometric Pressure can be off by thousands of feet with just a little temperature change. And just a couple clicks don't make up the difference.



Phil

Now you done it.... you spewed worthless info all over this thread.... and once again showed that you don’t know much about shooting in various altitudes.....

Here’s some ACTUAL dope.... from an ACTUAL rifle/load. It’s pretty a pretty common combo for making ACTUAL hits..... 6 Creed, 108 ELD @ 3000fps

We’ll use 650 yards.... Because that’s what I referenced in the post you schitt-the-bed on....

Home “altitude”.... 5000’ ASL (or 25 inHg for you sophistcated types)



Here’s the dope at 10000’ ASL (or about 20 inHg)



Now.... here’s the dope at Sea Level ( or 30 inHg)




Pretty easy to see that based on an average altitude (or barometric pressure).... it is ACTUALLY just a couple of clicks. And.... those are some pretty significant swings in elevation/pressure.

Sorry to break it to you man.... but it really is that easy to folks who ACTUALLY shoot.

Fugg this is a funny thread.

You and me both.

Thanks for the help guys, cool stuff here, Made it to the range today, rain and all,

Verify 100 yard zero, then back out to 200, 3.5 inches drop, do the math, add 1.7 moa and whammo!

Move out to 300, 14.25 inches drop, do the math, dial up 4.66 moa, and whammo!

The adjustment at 300 was perfect, 5 shots in the bullseye,,,, The tracking on this Luepold VX3 must be fairly accurate.

5 shot group at 300 was 2.655 inches per my Starrert Caliper,

with a light rain and east wind......I'll take that.............

Guess what happens when verify in the field with precise numbers,

You get 14.25 inches drop at 300...........

Color me surprised.

The clicks are MOA so your math is off...…………..


Lefty C

How so?

Where'd he go?

Show your work...

Is this a test?

3.5 inches drop at 200 yards....3.5 /2/ 1.047= 1.7 moa

14 inches drop at 300, 14/3/1.047 = 4.5,

or, 14 inches drop at 300, 14/3 = 4.66

And now what?

Good info from Aalf, Dogshooter, Stick here.....and Greg...grin...

Like said, do yourself a favor and SKIP the skull [bleep] of the math. Only thing that should be on your brain is MOA... not inches... not clicks...not does my scope use MOA or IPHY.

Easiest thing you can do for yourself is take advantage of a ballistics program, whether it be on your phone or PC. Ballistics AE is the most intuitive IMO as far as a phone app goes. Depending on the where and what I use a Kestrel and/or that app. Build yourself a rifle profile and store it... it takes about 10 seconds to adjust the variables for it if you wish.

Or build you a dope card, etc for an average day at your location like these guys have shown. Like DS said, within normal hunting distances the slight variables don’t add up to much. The Indian’s skill set, or lack of, will be the deciding factor at those ranges. ONLY way to hone that is LOTS of spent primers in the field in any and all conditions...

You are just scratching the surface at 300. Other factors will come into play as you venture out further, but that’s for a different time.

Did I miss what round and bullet?

I just take a pencil and make a mark on the CDS cap. Easy to wipe off and reset if necessary.

If a guy wants a custom turret/label that works, and is inexpensive, this is the ticket.

https://customturretsystems.com/

Something else to remember about the 'Math' is that the moa reticle dots are set at the max power of the scope. If you have your scope set lower than the max setting the marks will equal more than moa. ie: 1/2 of max power should give you 2 moa per dot. Can get pretty involved if you like to run your scope set lower than max power.