Plinkin' Logs
Member
Hey guys,
So I got something in my head that has been bugging me for the past few days. I got one of those basic laser bore-sighters you can find on Amazon amongst other places. Seemed pretty straight forward. Attach the adapter and twist up to expand it until it is approximately the right size for the bore insert it and twist it more until it is snug. Right?
Well the boresighter is hard anodized. I didnt think much about it at first. I put it in my two airguns first. Pulled it out and it had what looked like metal transfer on the neck of the rod that is inserted into the bore at the tapered where it rested on the crown. I figured this was probably lead dust since I dont clean them often. I then put it in my 2 Rossi semi auto 22lrs. I got the same small amount of metal transfer coloring on the rod of the boresighter right were it would rest on the crown. I looked at my rifle and noticed the spot was a little shiny around the tops of each of the lands if you looked at very closely where the boresighter touched.
I got worried this minor rubbing could have affected the crown, but since the rod of the boresighter is conical I imagine even if it did abrade any of material from just a few turns more then removing the finish on those spots, it would be even across all the lands (making it similar to the brass screw polishing method used to clean up damaged crowns). Needless to say I stopped using the boresighter after noticing.
And yes the hard anodizing on a boresighter is harder then just about any barrel steel I discovered. I tested it by taking a tool steel screwdriver and knife blade to the boresighter to see if I could scratch it. No luck, but the tool steel rubbed off on the anodized surface.
I'm thinking they should be fine, but I would like the opinions of some more experienced gunsmith out there. I will try to post some photos when I get back home
So I got something in my head that has been bugging me for the past few days. I got one of those basic laser bore-sighters you can find on Amazon amongst other places. Seemed pretty straight forward. Attach the adapter and twist up to expand it until it is approximately the right size for the bore insert it and twist it more until it is snug. Right?
Well the boresighter is hard anodized. I didnt think much about it at first. I put it in my two airguns first. Pulled it out and it had what looked like metal transfer on the neck of the rod that is inserted into the bore at the tapered where it rested on the crown. I figured this was probably lead dust since I dont clean them often. I then put it in my 2 Rossi semi auto 22lrs. I got the same small amount of metal transfer coloring on the rod of the boresighter right were it would rest on the crown. I looked at my rifle and noticed the spot was a little shiny around the tops of each of the lands if you looked at very closely where the boresighter touched.
I got worried this minor rubbing could have affected the crown, but since the rod of the boresighter is conical I imagine even if it did abrade any of material from just a few turns more then removing the finish on those spots, it would be even across all the lands (making it similar to the brass screw polishing method used to clean up damaged crowns). Needless to say I stopped using the boresighter after noticing.
And yes the hard anodizing on a boresighter is harder then just about any barrel steel I discovered. I tested it by taking a tool steel screwdriver and knife blade to the boresighter to see if I could scratch it. No luck, but the tool steel rubbed off on the anodized surface.
I'm thinking they should be fine, but I would like the opinions of some more experienced gunsmith out there. I will try to post some photos when I get back home
