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New Scope and group size changed?

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/12/2011 at 17:58
Ben Diss View Drop Down
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I've been shooting my AR-15 with a Nikon M223 3-12 scope on their one-piece mount.  I've been pleased, but never had any super tight groups yet with this rifle.  I'm shooting an action match next month, so I picked up the new SS 1-4 with SWFA's quick release mount.

First thing I did today at the range was sight it in and test for repeatability of the mounting location.  Sighted in, removed scope, installed scope, fired, repeat.  At 50Y, POI stayed the same.  Sweet.

Then, I tried the experiment with the Nikon and after reinstalling the scope and adjusting, I noticed that the group size had increased.  I was shooting 10 rounds fast with the SS 1-4 at 50Y in about a 1" group.  Even slower, with the M223, they grew a bit to 1.5-2.0 inches.

Is that possible?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/12/2011 at 20:42
jonoMT View Drop Down
Optics Master Extraordinaire
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Parallax error or perhaps the scope is moving just a bit???
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/12/2011 at 22:16
Ben Diss View Drop Down
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Optics GrassHopper


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Maybe.  I wasn't paying attention to parallax as the scope has a setting for 50y.  I should take a look and see if the settings are accurate.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/12/2011 at 23:07
helo18 View Drop Down
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Could possibly the thickness of the reticle too if there is a big difference.  Wouldn't think it would change that much at that range, but it could I guess.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/14/2011 at 07:56
SVT_Tactical View Drop Down
Optics Retard
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Chief Sackscratch

Joined: December/17/2009
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Its just cause the SS is that much betterBucky lol
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