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Zeroing Tips from the Guru

I RECENTLY WATCHED SEVERAL “HOW-TO” VIDEOS, ON THE SUBJECT MATTER “HOW TO MAKE ADJUSTMENTS TO YOUR RIFLE SCOPE”. ONE THING I NOTICED QUICKLY, WAS A LACK OF CLEAR EXPLANATION OF HOW TO DO IT, WHAT THE “CLICKS” INDICATED, MINUTE OF ANGLE, & JUST HOW MANY CLICKS WERE REQUIRED TO MOVE THE BULLET’S IMPACT POINT @ DIFFERENT DISTANCES. AS A SERVICE TO THE READERS OF THIS COLUMN, I SAID TO MYSELF “THIS LACK OF KNOWLEDGE IS UNACCEPTABLE !!!” SO HERE GOES FROM YOUR FRIENDLY, LOCAL NEIGHBORHOOD

Inside of Burris scope caps shows click value at 100 yards.

“GURU”……………………………………………

“WHAT IS MOA ???”—MINUTE OF ANGLE—IT IS A MATH EQUATION THAT EQUALS JUST SLIGHTLY MORE THAN 1 INCH (1 MOA = 1.000″, 2 MOA = 2.000″, ETC.) 1/2 MOA = .500″, 1/4 MOA = .250″, & 1/8 MOA = .125″

“MOA” IS USED TO EXPRESS THE SIZE OF SHOT GROUPS (OUTSIDE TO OUTSIDE) & TO INDICATE THE AMOUNT OF CORRECTION REQUIRED TO STRIKE THE INTENDED TARGET @ DISTANCES, BASED ON MANY WELL-KNOWN EXTERNAL FACTORS. PAY VERY CLOSE ATTENTION TO WHAT I AM ABOUT TO TELL YOU & THIS FACT IS NOT OPEN FOR DISCUSSION, DEBATE, OR CALLING ME UGLY NAMES:

Top turret shows direction to turn to shift impact up and down.

“WHEN VERTICAL / WINDAGE ADJUSTMENTS ARE MADE ON THE SCOPE, YOU ARE MOVING THE IMAGE SEEN THROUGH THE SCOPE. YOU ARE NOT MOVING “THE CROSS-HAIRS”, YOU ARE MOVING THE BULLET’S IMPACT POINT” !!!! IF YOU EVER SEE THE CROSS-HAIRS MOVING, YOU HAVE A FAULTY / BROKEN / NON-FUNCTIONAL OPTIC, WHICH MUST BE REPLACED”…………………  

THE BULK OF OPTICS  SOLD IN THE USA & TO MOST OF THE WORLD’S HUNTERS, HAS WHAT IS KNOWN AS ” 1/4 MOA @ 100 YDS.” THIS MEANS THAT FOR EVERY “CLICK” OF ADJUSTMENT (VERTICAL / WINDAGE), IT WILL ALTER THE BULLETS IMPACT POINT @ 100 YDS. OF 1/4″ OR .250″ @ 100 YDS. IF YOU TURN THE DIAL “4 CLICKS” AT THAT DISTANCE, YOU JUST MOVED THE BULLET’S IMPACT POINT 1.000″ / 1 INCH !!!!!!!!!!

Side turret shows direction for left and right corrections.

“NOW HOLD ON JUST A DOG-GONE MINUTE, MR. GURU !!!! HOW DOES ONE ACCOMPLISH THIS, IF A 100 YD. SHOOTING DISTANCE IS NOT AVAILABLE ????”—-“KEEP READING SPARKY & LEARN FROM YOURS TRULY !!!!!!”:

16 CLICKS @ 25 YDS. = 1.000″

8 CLICKS @ 50 YDS. = 1.000″

4 CLICKS @ 100 YDS. = 1.000″

NOW, FOR THOSE WHO ROUTINELY SHOOT HI-POWER CARTRIDGES @ EXTENDED DISTANCES, HERE ARE THE “CLICK VALUES” YOU MUST BE AWARE OF:

4 CLICKS @ 200 YDS. = 2.000″

4 CLICKS @ 300 YDS. = 3.000″

4 CLICKS @ 400 YDS. = 4.000″, ETC. ETC. ARE YOU BEGINNING TO UNDERSTAND THE PROCESS ????  OUTSTANDING !!!!!

BORE-SIGHTING / ZEROING, IS ALWAYS DONE @ 25 YDS. BECAUSE THIS IS WHERE THE BULLET & “THE OPTICAL LINE OF SIGHT” FIRST CONVERGE. THUS, IT WILL REQUIRE 16 CLICKS OF ADJUSTMENT TO MOVE THE IMPACT POINT 1.000″ @ THAT DISTANCE. IF YOU ATTEMPT TO “ZERO” THE BULLET’S IMPACT POINT @ 100 YDS. WHATEVER THE DEGREE OF ERROR WAS @ 25 YDS, IT WILL BE 4 TIME WORSE @ 100 YDS !!!!!!!!

OPTICS SUITABLE FOR BOTH PRECISION BENCH-REST & LONG-DISTANCE TACTICAL SHOOTING, WILL HAVE SCOPES THAT FEATURE A “1/8″ / .125″ MOA @ 100 YDS” & WILL REQUIRE 8 CLICKS TO MOVE THE BULLET’S IMPACT 1.000″ @ 100 YDS.—MUCH FINER ADJUSTMENTS !!!!

ANYONE GOT ANY QUESTIONS ???? HOPEFULLY, YOU HAVE A MUCH BETTER UNDERSTANDING OF “SCOPE ADJUSTMENTS” !!!!!!

“GURU”

Mike Whitlock brings 40 years of firearms experience to the Guru’s Classroom.