[Jager]

I have an old a 03A3 with a an old Bausch and Lomb scope with the adjustments in the mounts. I cant get this thing to shoot at all. When I look through the scope and move my head around the cross hairs move. None of my other modern scopes do this. Is this normal? Is there a way of fixing it? I think it is effecting my accuracy because I would have to hold my head the exact way everytime a feet I havent been able to do. Ive gotten pretty close but that doesnt seem to be close enough at hundred yards.

[samuel]

I dont understand what you mean by adjustments in the mount. sam.

[Jager]

Well in adjustments are in the bases of the scope. So in the back base of the scope mount theres a screw that you turn for up and down and the front mount has a screw for left and right. There is no adjustments in the scope body itself. The scope is just a sealed tube.

[rfc357]

What you are seeing is parallax. The focus planes of the reticle and target differ. Most scopes designed for high power use either have adjustable parallax or have the parallax adjusted at the factory for 100 yards. If you are shooting at ranges much shorter than 100 yards, you will see the crosshairs mov noticeably.If you can see the crosshairs move enough to bother you at 100 yards, you have a parallax problem. This probably requires factory repair, which may not be available for an old B&L scope.

Try focusing the scope from scratch. Turn the eyepiece out as far as it will go (but not off the scope tube!). The adjust the focus in a half turn at a time until the target and crosshairs are sharp at 100 yards or more. Between turns, remove your eye from the scope and look at the sky for a few seconds to let your eye accomodate to infinity. The other shooters will think you are a zen master.

Focus and parallax are not the same, but sometimes a scope that is out of focus will exaggerate a parallax issue. Your eye is a marvelous thing, and will drive into focus even if the scope is not ideal for your vision. As you get older, you will have to re-focus your scopes every year or two.

[samuel]

This whole setup sounds like a real colectors item to me.I am going to advise you to go to military firearms and post this under the 03A3 section and see what some of these people have to say.External adjustments havnt been used in years and this may be some kind of rare sniper setup.I would be afraid to advise you for rear of doing damage to something valuable. sam.

[Jager]

I thought about that except there doesnt seem to be much activaty over there.

[DWARREN123]

Older scope and you will have parallax, you must have the same relief distance and position for your head every time. Newer quality scopes have a parallax adjustment and are a little more forgiving.

[rfc357]

The B&L scopes with external adjustment were a commercial item offered in the 1960s. Very nice quality, but they did not catch on commercially. Not a military item.

There are several external adjust mounts available today. I use Leupold mounts with their external windage adjustments to rough zero a scope, then use the internal adjustments for fine zero.

[samuel]

Quote:       Originally Posted by rfc357

The B&L scopes with external adjustment were a commercial item offered in the 1960s. Very nice quality, but they did not catch on commercially. Not a military item. There are several external adjust mounts available today. I use Leupold mounts with their external windage adjustments to rough zero a scope, then use the internal adjustments for fine zero.

If rfc357 is right and there is no colectors value I will advise what I was going to.take it off and get a reasonably priced setup and end your agrivation. sam.