Used colt scope should I center the crosses hairs before mounting?

NYCOP · December 8, 2002, 01:52 PM

Should I turn the adjusters to the middle before I mount and shight the scope? It is a handle mounted AR-15 scope.

Dfariswheel · December 8, 2002, 02:09 PM

Things usually work out better if you do.
I would center the reticule, mount the scope, then use the bore sight method at a 25 yard target, to get the first shots "on the paper".
Then go from there.

AK103K · December 9, 2002, 06:31 AM

Why not just pop it on the gun, aim at something with the iron sights and see where the cross hairs are in relation to them, then adjust. When you have see through iron sights, you dont even need to bore sight. I've dont this with a couple of guns and was always on the paper with the first shot.

pashooter · December 10, 2002, 01:04 PM

Interested in a detailed explanation of the bore sighting method.
Any recommendations as to the best bore sight product for .223 prebans with flashhiders?
Have heard about ALPEC and would appreciate any feedback.
Thanks in advance.

AK103K · December 10, 2002, 03:50 PM

The gunsmith version or the at home without a collimator version?

pashooter · December 10, 2002, 05:27 PM

The at home version for the non-technical.
No trajectory charts, elevation from sea level, humidity or bullet weight.
Just the out on the range, not to expensive, easy to follow directions.
Thanks

AK103K · December 10, 2002, 06:00 PM

I do it two ways with the AR, the way I suggested before, using the known zero iron sights and verifing the scope coincides. I do this on guns that have see through sights. Works pretty well. The other is to put the upper on a rack or something solid so it doesnt move, pick a point about out in the yard somewhere, or put a target out there, something you can see easy. Line the target up in the bore of the rifle, then, without moving the upper, look through the scope and see where its hitting. Just dial it on to the target so when you look down the bore and see the target the cross hairs are in pretty much the same place. I usually try to shoot at 25 yards first to make sure I didnt screw up, but 90% of the time, I'm real close. This works for bolt guns to. For guns you cant see down the bore, like an M1A, etc. I use one of the 90 degree bore mirrors. This make sense?

pashooter · December 10, 2002, 08:15 PM

Sure does.
I just wasn't thinking of taking the upper off of the lower.
Thought someone might have had experience with laser bore sight like:

http://www.alpec.com/catalog/index.m...de=Boresighter

December 8, 2002, 01:52 PM	#1
NYCOP Member Join Date: October 23, 2002 Posts: 64	Used colt scope should I center the crosses hairs before mounting? Should I turn the adjusters to the middle before I mount and shight the scope? It is a handle mounted AR-15 scope.

December 10, 2002, 01:04 PM	#4
pashooter Junior Member Join Date: December 10, 2002 Posts: 5	bore sighting method? Interested in a detailed explanation of the bore sighting method. Any recommendations as to the best bore sight product for .223 prebans with flashhiders? Have heard about ALPEC and would appreciate any feedback. Thanks in advance.

December 10, 2002, 05:27 PM	#6
pashooter Junior Member Join Date: December 10, 2002 Posts: 5	bore sighting The at home version for the non-technical. No trajectory charts, elevation from sea level, humidity or bullet weight. Just the out on the range, not to expensive, easy to follow directions. Thanks

December 10, 2002, 08:15 PM	#8
pashooter Junior Member Join Date: December 10, 2002 Posts: 5	bore site Sure does. I just wasn't thinking of taking the upper off of the lower. Thought someone might have had experience with laser bore sight like: http://www.alpec.com/catalog/index.m...de=Boresighter

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December 8, 2002, 02:09 PM	#2
Dfariswheel Senior Member Join Date: May 4, 2001 Posts: 7,478	Things usually work out better if you do. I would center the reticule, mount the scope, then use the bore sight method at a 25 yard target, to get the first shots "on the paper". Then go from there.

December 9, 2002, 06:31 AM	#3
AK103K Senior Member Join Date: May 1, 2001 Posts: 10,223	Why not just pop it on the gun, aim at something with the iron sights and see where the cross hairs are in relation to them, then adjust. When you have see through iron sights, you dont even need to bore sight. I've dont this with a couple of guns and was always on the paper with the first shot.

December 10, 2002, 03:50 PM	#5
AK103K Senior Member Join Date: May 1, 2001 Posts: 10,223	The gunsmith version or the at home without a collimator version?

December 10, 2002, 06:00 PM	#7
AK103K Senior Member Join Date: May 1, 2001 Posts: 10,223	I do it two ways with the AR, the way I suggested before, using the known zero iron sights and verifing the scope coincides. I do this on guns that have see through sights. Works pretty well. The other is to put the upper on a rack or something solid so it doesnt move, pick a point about out in the yard somewhere, or put a target out there, something you can see easy. Line the target up in the bore of the rifle, then, without moving the upper, look through the scope and see where its hitting. Just dial it on to the target so when you look down the bore and see the target the cross hairs are in pretty much the same place. I usually try to shoot at 25 yards first to make sure I didnt screw up, but 90% of the time, I'm real close. This works for bolt guns to. For guns you cant see down the bore, like an M1A, etc. I use one of the 90 degree bore mirrors. This make sense?