I have an English gun that is no prize but the barrels are good and the gun is too nice to sell for parts or to throw away. I bought it as a wall hanger but the barrels measure .0295 by using the mic on the out side and using a barrel bore measure on inside, Double checking with a barrel wall measure I got .030. The gun is off face I figure about .007. My question how do I fix that. Some say knock out the pin and rotate it. I've never done that. Can the pin be knocked out from either side and what sort of tool do I use? Others say teg weld the hook and grind it to size. How much does a teg weld cost and what do I look for so that the barrel solder is not melted.

I know I ought get a pro but it is rather a basic gun that really doesn't justify a big out lay of money and besides I would kind of like to do this myself.

Thanks.