boresighting scope question


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btburn
May 16, 2006, 02:55 PM
OK, I have a remingto 700 VSF in 308 with a leupold mark 4 base and TPS medium .785" heavy rings.

I haven't shot it yet , I have everything torqued down proper and whe I went to bore sight it wth a laser at 25 yards It looks like I'm going to run out of windage adjustment. the scope is a bausch and lomb elite 4000 6-24x with 117 clicks adjustment in either drection from mechanical zero on scope.

If I leave it boresighted the way it is I wil have 0 to 12 clicks left to adjust windage.

I've tried switching rings around so they are torqued on opposite side as they were but eveything stayed the exact same.

Vertical zero is fine.

I would prefer to keep the base and rings I have because they are nice and heavy, vs. the windage adjustable types.

My question is is there any way to shim for windage on the sides between base and rings.

Any suggestions?

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Chawbaccer
May 16, 2006, 06:27 PM
First, is the laser bore sighter correct?
2. are you sure the rings are in alignment?
3. can you switch out another scope,borrow a buddy's if necessary.
4. Put the scope in a set of rings that you know are in align.
If it is the scope, Leupold has one of the best warranty services I know of, I wouldn't try some jurry rigged deal and you will get the clearest view thru the scope if the reticle is near the center.

One of Many
May 16, 2006, 07:20 PM
Burris makes rings with offset inserts just for problems like this. I think I would shoot it at the 25 yard range and see where it is actually hitting relative to the aiming point, before changing anything. It could be that the rifle has an offset in the alignment of the mounting holes for the scope. It could also be a problem in the scope. If the scope checks out OK then you may need to use a different base, with windage adjustment, to allow the scope to be centered. Dial it in then locktite the adjustment on the base, when the scope is centered, and fine tune the windage with the scope adjustment.

R.W.Dale
May 16, 2006, 07:23 PM
I think that you need to shoot the rifle first, You are putting way too much faith in boresighting.

I've found that about the only thing boresighting is good for is it will SOMETIMES get you on paper at 25yds.

ArmedBear
May 16, 2006, 07:26 PM
Are those Leupold bases adjustable? I know a lot of Leupold bases are adjustable.

(Glad I got Warnes: when I screwed them on my Weatherby and mounted the scope, I was surprised to find that the gun was already shooting in the 7 ring!)

Also, could the scope be off? Can you eyeball the scope, off the gun, from zero? If it's that far off, it should be noticeable, I'd think.

hoghunting
May 16, 2006, 07:41 PM
Before you start changing things, sandbag or put the gun in a vise and pull the bolt from the rifle. From the rear of the action, look through the barrel, and aim the bore at something about 100 yds away- car wheel, car license plate, street light, anything that is small enough to see through the barrel. Then look at the reticle. Can you adjust it so that it is centered on the object that you aimed the barrel? If you can, you are ready for the range. If not, you might have to try a different mount, or try shimming the rings if you can make it work.

btburn
May 17, 2006, 12:21 AM
I did the boresighting by eye first and it is the exact same as the boresighter. I don't even think it would hit paper at 100 maybe at 50 and 25 hit in the far right corners so so.
I think the base mount holes may be askew a little bit or something.
I talked to a gunsmith at the stor and he said make some shims to correct the allignment so I'm going to give that a shot and see how it comes out.
I'm going to double check my scope and make sure it's not the problem. And if not I'll get some adjustable bases.

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