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8/10/2009 9:01:05 AM EDT
What is the rule on rear sight adjustments with M2 ball for each range?  How many up for 300, 400, 500..etc.

After zeroing at 100, I backed off to 300 and was banging my IPSC size steel plate, but was just holding over...I know there must be some rules on sight adjustment.  My rear sight was bottomed on the 100 yard zero, is that normal?

B
8/10/2009 9:38:08 AM EDT
[#1]
Swampy got some good posts.....here is one I copied a while back..........

Standard Highpower come ups are as follows:

With a 100 yard zero....

For 200 yards come up 1-2 MOA
For 300 yards come up 2-3 MOA MORE
For 500 yards come up 7 MOA MORE
For 600 yards come up 4 MOA MORE

This works for all Highpower appropriate cartridges regardless of caliber, bullet wt., or velocity. We use it all the time to get new guys on the target when they show up to their first Across the Course Highpower event and only have a 100 yard zero. It gets them in the black every time.... only takes a minor adjustment off the sighters to find center.

Best regards,
Swampy


and another one (for M1A/M14 in 7.62 NATO)............

I did that once, then it got out of whack again. From then on I just memorized my come ups in clicks; besides you can't see the marks in the dark without exposing your position

Here is a starting point for you
100 yard zero is about 6 to 8 clicks from mechanical zero

FROM A 100 yd. SETTING:
-come up 2-3 clicks for 200 yds.
-come up 5 clicks for 300 yds.
-come up 12 clicks for 500 yds.
-come up 16-18 clicks for 600 yds.

STACKING
from 100-> 200yds is +2-3 clicks
from 200-> 300yds is +3 clicks
from 300-> 600yds is +12-14 clicks
or
+2 for 200
+3 for 300
+12 for 6

Hope that helps

Posted by: octanejunkie (m14tfl.com)


FWIW.......each "individual rifle" will vary.  But (most times) it'll be close enough for government work.

When you find yours.........mark it or write it down in your score book.

Aloha, Mark

PS...........bottomed at 100 yrds.........IMHO, it's NOT normal.

And, BEWARE.......as for the knobs.......the M1 is marked in yards and the M14 is marked in meters.
8/10/2009 10:39:48 AM EDT
[#2]
So roughly two MOA per 100 yards with a 100 yard zero.

Am I correct that Garand sight clicks are 1 MOA each?

8/10/2009 2:57:26 PM EDT
[#3]
M1 and M14 clicks are 1moa each. (in theory)

If you have your elevation dialed to the elevation knob and you're using standard ball ammo, you can count the clicks too, as a backup plan.
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