Author Topic: scope  (Read 387 times)

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Offline turbot

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scope
« on: June 18, 2006, 10:17:18 AM »
Can someone tell me how to sight in a scope
Brian

Offline Demonical

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scope
« Reply #1 on: June 18, 2006, 11:21:32 AM »
A simple way to bore sight a scope is to remove the bolt, set the rifle on sandbags and sight through the barrel at your target and see where your barrel is lined up on it. Then simply look through the scope to see where it is. Then take and carefully adjust the X-hairs so they line up. If your scope was properly installed to begin with, this should not be a large adjustment, so pay attention to that. If you need a huge number of turns to align then you might want to stop and look at that and remount the scope...

But assuming the scope was properly installed this requires a small adjustment and puts you on paper right away.

Offline Demonical

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« Reply #2 on: June 18, 2006, 11:33:35 AM »
Continued...



So after the simple bore sight, fire a group as carefully as you can and then adjust the center of your group towards the center of the target.

To keep it simple, most scopes move the X-hairs 1/4" per click at 100 yards. Therefore if you were 4" left and 2" low, you require ~16 turns to the right and 8 up. I never will take all of this in one adjustment. I'd probably only go 12 and 6 and then fire another group.

Repeat.

Another thing a lot of guys believe in, is to take and give your scope a gentle tapping to "settle" the rings after any adjustment. I have no idea how much this matters...

Edit: The way you do that is right on the adjustment screw take an empty case and lightly tap the screw...

AND... for most standard calibers sight in to be 2-3" high at 100 yards.



FWIW I only fire 5-shot groups. I don't trust 3-shot groups.



Cheers, Jim.