Burris Posi-lock on Encore???

[plannerman]

Anyone have experience with the posi-lock feature of the Burris handgun scopes?  Seems I've heard that once the act of "posi-locking" can shift the position of the crosshairs.  

Shoot my 15" 7-08 today.  Shot okay, got on paper and adjusted to keep it in a 3" circle at 100 yards.  Made a final adjustment and shot a 3 shot group of 1.5"!!! Thought that was outstanding for my first time out.  Anyway, wanted to move my shot group 1" to the right.  Moved the scope 4 clicks, and then realized I hadn't locked the posi-lock on the 1.5" group.

Long story short, I moved the scope the 4 clicks for a 1" right adjust, locked the posi-lock, and fired a 3-shot group (about 2" group), but the group moved 3" high and 2" to the right.  Can't figure it out.

On thought I had, but doesn't explain  the vertical shift, is the scope may be a 1 click = 1/2" adjustment.  Bought the gun and scope used and didn't get manual.

Any thoughts???  Thanks

[xphunter]

my advice is to leave the posiloc feature alone and pretend it wasn't there.  I do that on my 7.82 Patriot XP-100 3-12 and have never had a problem with it.

[HL]

You are correct. Once you loosen the posi-loc and site in your firearm to where you want it, the POI will change once you tighten the posi-loc back to it's secure position.

[plannerman]

Thanks for the input, that' what I was figuring... leave it alone or it will affect POI.