fixed iron sights shoot 3 inch left at 25m.....

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Iron sights

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So I picked up an Investarms trade rifle .50 cal cap lock at a gun show a few weeks back. After some intense cleaning I got it to shoot only to see that at 25m it strikes 3 inches to the left. After examining the rifle I noticed that the fixed iron sights are not even centered on the barrel. I see no screws so I assume it must be soldered on and I am curios as to how I can remove this sight and attach a new one.

Or, if I am blind/ignorant and there is a way to adjust windage on this sight any info on that would be appreciated.



 
Depending on how easy it was to shift it the dovetail might be too loose and that's why it got bumped off to the side like it was. If you find that is the case and it moves again there are a couple of things you can do. One is to put 5 or 6 light center punch marks into the inside flat of the dovetail to raise little burrs which will grab the sight more firmly. The other is to LIGHTLY peen down the front and rear edges of the barrel dovetail slot to make the sight fit more tightly.

In extreme cases you can also make up a shim from a set of feeler gauges you buy strictly to use as stock for making such things. In that case you'd use the thickness that gives the sight a good firm tap into place fit. But that is only on sights which can literally slip in and out with nothing more than finger pressure. If it's fitting fairly well and just needs a little tightening up then center marks or peening the edges down is the better way to go.

The peening is more permanent but needs to be done with a greater deal of precision and care. Be sure you know what you're doing for this and sneak up on how much peening you do.
 
BCRider said:
Depending on how easy it was to shift it the dovetail might be too loose and that's why it got bumped off to the side like it was. If you find that is the case and it moves again there are a couple of things you can do. One is to put 5 or 6 light center punch marks into the inside flat of the dovetail to raise little burrs which will grab the sight more firmly. The other is to LIGHTLY peen down the front and rear edges of the barrel dovetail slot to make the sight fit more tightly.

In extreme cases you can also make up a shim from a set of feeler gauges you buy strictly to use as stock for making such things. In that case you'd use the thickness that gives the sight a good firm tap into place fit. But that is only on sights which can literally slip in and out with nothing more than finger pressure. If it's fitting fairly well and just needs a little tightening up then center marks or peening the edges down is the better way to go.

The peening is more permanent but needs to be done with a greater deal of precision and care. Be sure you know what you're doing for this and sneak up on how much peening you do.
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do not do this unless you are very versed on what you are doing-where you are doing it -how hard to hit with how heavy of a beating tool - how pointy your center punch is and above all how deep is the dovetail cut into the barrel in reference to how big the bore hole is...I have seen a couple of barrels pretty much made into boat anchors by over-exuberance in this area. The webb of steel left in the center of the dovetail can be very weak and almost no pressure at all is needed to dent into the bore with the concentrated force a center punch exerts. By far a better idea to peen the bottom of the sight itself or the other suggestion to beat down the outside lips of the dovetail so they grip a bit tighter.
 
Thank you all for responding. After some persuasion with a mallet and padded punch it moved (took the barrel out of the stock first). now she hits the gong at 100M :). Think I'm going to try it for deer this year.
 
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