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AR15.COM
11/14/2006 3:32:47 PM EDT
Not going to be able to get to the outdoor range before the end of the season.  I thought I read somewhere that sighting a scope in at 25 yards is equivalent to sighting it in at 200 yards; is this correct?  If so does this work for all calibers (eg - .308 and .223)?  I don't want to wait to sight in the changes I've made until next spring so, if this is true, I can go to the local indoor range.

Thanks in advance for any help.

M590man
11/14/2006 3:35:21 PM EDT
[#1]
Sighting it in at 25 yards dead on with most calibers will get you "on paper" at 200, provided the paper is good sized.
11/14/2006 3:41:27 PM EDT
[#2]
If you have the proper information, you can shoot at 25 yards and be in the black at 200.  You need to know sight line above the bore, MV, BC, ...
11/14/2006 3:42:36 PM EDT
[#3]
This says your 25 yd bullseye will translate to 2-3 in high at 100 yds and back to the bullseye at 250 yds.

www.wc.adfg.state.ak.us/index.cfm?adfg=huntalaska.sightingin
11/14/2006 3:44:04 PM EDT
[#4]

Quoted:
Sighting it in at 25 yards dead on with most calibers will get you "on paper" at 200, provided the paper is good sized.


Umm that really depends on the kind of rifle - and the height over bore of the optic.

Sighting 'Dead on' at 25 yards with an AR will put you well OVER the paper unless it's a very large sheet.  That high (2.6") height over the bore of the optic will do that.
11/14/2006 4:17:40 PM EDT
[#5]

Quoted:
Not going to be able to get to the outdoor range before the end of the season.  I thought I read somewhere that sighting a scope in at 25 yards is equivalent to sighting it in at 200 yards; is this correct?  If so does this work for all calibers (eg - .308 and .223)?  I don't want to wait to sight in the changes I've made until next spring so, if this is true, I can go to the local indoor range.

Thanks in advance for any help.

M590man


Depends what you want to do.  If you're shooting minute of deer, a 50 yard zero will get you meat out to 200 yards.

If you're zeroing an M4/AR at 25 yards, you want to be 1" low to get a 50 yard/200 yard zero.