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Scope Zero

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 15:01
hlh1 View Drop Down
Optics GrassHopper
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I just bought a Barska SWAT 6-24 scope and mounted on my target rifle.  What is the "zero" for these turrets?  Here's a pic:

 

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 15:16
cheaptrick View Drop Down
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Welcome to The OT!!

 

You establish a 100 yard "zero" by clicking the turrets and shooting until all rounds are hitting point of aim @ 100.

If after you do that, I would assume you have some way of pulling the turret knobs off the turret, (maybe those set screws on the top of the knob in your pic could be backed off), raise the knob and set it back down with the zero and a slash at the bottom lining up.

Same deal with your windage knob.

 

Make sense??  

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 15:25
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I was planning on starting at a 25 yard distance and then moving to 50 and 100 yards, and zeroing at each distance.  My concern was that the I found the turrets adjusted to one side of their range and I'm thinking I'll be starting way off.  I was hoping someone would have the same scope and tell me where to start. Thanks! 

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 15:32
cheaptrick View Drop Down
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You want to find your scopes MECHANICAL zero??

 

http://www.opticstalk.com/forum_posts.asp?TID=3094&KW=me chanical+zero

Read Infidels post.



Edited by cheaptrick
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 16:00
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Also, if you are a detail-oriented person, look down the bore at the target; when the target is dead-center at 100 yards down the bore, it should be dead-center in the scope.  Rounds fired with both aligned as well as you can should put the first impact on paper, then simply adjust.  This is called 'bore sighting."

 

There is really no reason to "zero" at 25, 50, and 100; bore sight at 100, set the scope accordingly, and fire away.  If rounds aren't on paper, then move back to 50 and try again.  At 100 yards, you should be on and you can walk rounds to bullseye.

 

In my opinion, "optical center" is somewhat irrelevant.  If I can't bore-sight and print on papaer, something is wrong that a v-block ain't gonna help.

 

And, for your edification: when you have the scope off the gun (or ahve a known zero), click through the full range, up, down, left, and right; so you know how much adjustment you really have.

 

And once you mount and zero the gun, note actual zero in number of clicks from stop - both horizontal and vertical. 

 

It isn't that tough,just document every movement on the turrets till you are printing dead bulls (and printing groups, not individual rounds.)  Once you have a solid zero, throw away the old documentation and start anew.  never click a single adjustment into your scope that isn't written somewhere (on the bench), and I recommend come-uops taped to the stock so you know in the field where to go(or a BDC, if they make one for that scope.)

 

 

Good luck.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 16:56
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Optics GrassHopper
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Thanks for the language lesson: "mechanical zero" is the correct thing to say.  I'll read the article.  Good advice on bore sighting, but you'll see below this setup is a bit difficult to bore sight. And good advice on documenting the settings. 

 

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 18:26
cheaptrick View Drop Down
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Nice rifle.

You can pull the upper off seperately and do the "poormans bore sight" job if you want to get it close.

Just a suggestion....

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 18:31
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Optics GrassHopper
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Originally posted by cheaptrick cheaptrick wrote:

Nice rifle.

You can pull the upper off seperately and do the "poormans bore sight" job if you want to get it close.

Just a suggestion....

 

Good point!  That's what I'll do.  It'll get me in the ball park.  It's a J&T Distributing Bull barrel kit on a RRA lower. 



Edited by hlh1
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/03/2007 at 19:12
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Yeah, it works.

I just did it to my 16" middy upper.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/06/2007 at 16:42
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Optics GrassHopper
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I ended up not having any problems at the range.  I just  set the turrets in the middle of their range and I was about 4" off dead center at 25 yards.  I then moved to the 50 yard range and had dead center after another 3 rounds. Then on to the 100 yard range.  In ten rounds I had the scope set and then started working on groups.  The Barska is all I need for now in a scope, especially at $150, but I do need a better trigger for consistancy.  Here's a target:

 

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/06/2007 at 19:27
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Welcome to the forum.  Nice shootin'!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/06/2007 at 19:33
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Optics GrassHopper
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Originally posted by ceylonc ceylonc wrote:

Welcome to the forum.  Nice shootin'!

 

Thanks!! 

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