View Single Post
Old October 29, 2002, 10:13 AM   #3
Steve Smith
Senior Member
 
Join Date: December 9, 1999
Posts: 4,131
Based upon the numbers in the manual, these adjustments work out to about 1.2 MOA per click for the the front sight post

-Should be 1.25 per click, 4 clicks being 5 minutes. (5 minutes per rev)


and 0.43 MOA per click for the rear windage.

-Should be .5 or 1 Minute windage on a standard sight...I believe all Bushys have .5 minute windage clicks.

These seem a little odd since I would have expected something like 1.0 and 0.5 MOA. But the manual does indicate that three clicks of the windage are needed to adjust as far as one click of the front elevation.

-umm, you mean ELEVATION, right? (windage clicks can't = elevation changes on front sight)

Anybody know how the military selected these adjustment values?

-nope

Also, what is the MOA/click for the rear elevation adjustment? Thanks.

-The rear elevation should be either .5 or 1 MOA per click. Shoot 5 rounds at, say 100 yards (make it easy), move the rear sight up 20 clicks. Shoot it again. If POI changes 20 inches, then its a 1 MOA elevation sight. If it only moves 10 inches, then its half minute. If it moves 5, its quarter minute (doubtful in a non-match gun) Do same for windage. You can do this at 25 yards of course, but your POI shifts will be divided by four.


Note: No one ever said your stock gun sights were built correctly. Not only that, but many companies can't figure out how far away to space the detents so you really get .5 or 1 MOA increments. For example, RRA says that they're rear sight is 1/4 x 1/4 but put in on a dial indicator and you get 1/3 MOA elevation increments almost dead nuts. What your sight does an what it should do could be completely different. Only shooting it will tell you.
__________________
Favor the X.


Steve Smith
NRA Life Member
Steve Smith is offline  
 
Page generated in 0.03401 seconds with 8 queries