I have a Webley sidelock with a dented barrel. Shown between one and 2 inch marks on tape. Wall thickness is good with a minimum or .028". It is a long dent (about an inch) that runs somewhat diagonal. It is visible looking down the bore. I tried to lay a straight edge along it to give an idea of depth and it looks like the barrel is pushed in beyond the obvious part of the dent. Probably only a few thousandths and difficult to see but when you run your hand down the barrel it is very noticeable. So my question is, how hard is this type of dent to raise? What are my primary concerns in raising this dent as in risk of greater damage? Thanks.
http://i1353.photobucket.com/albums/q669/bghntr416/Webley010_zps4ca42394.jpg
http://i1353.photobucket.com/albums/q669/bghntr416/Webley006_zps67c43e5f.jpg
http://i1353.photobucket.com/albums/q669/bghntr416/Webley005_zpsb3703a8f.jpg
http://i1353.photobucket.com/albums/q669/bghntr416/Webley001_zpsc0a6cbdb.jpg