RE: HELP!! Copper fouling
Terry,
Good advice above. Hoppes is worthless on a really coppered barrel. I went through several 3 hour cleaning sessions trying to get the copper out of an old Model 100 Winchester I picked up. It was a real pain to finally get right.
You will definitely need a strong copper solvent to get the job done - Sweets 7.62 or the Barnes CR-10 worked really well for me. Get a chamber plug, some nylon bore brushes and about 1/2 dozen bore mops for the job. Clean the barrel like you normally do with a regular solvent and then go after the copper according the the instructions on the Sweets or CR-10. Plus, in between the dry patches, saturate one of the mops with the Sweets and pump it in & out of the barrel a dozen times until it really starts making some blue foam - hit it with the nylon brush again and then dry patch.
For bad fouling, this will have to be repeated multiple times & probably on multiple days. Then, if it doesn't look like much progress is being made, it is time to break out the J-B Bore Paste. Dry the barrel well and then apply the paste to a patch and run it up & down through the bore with a tight jag 10 to 15 times without stopping. Then clean it well with your normal solvent, dry patch it & repeat the process. After this, you can run a patch of Sweets through the bore to see if you pick up any copper - more than likely it will be clean as a whistle.
Once you get the bore this clean, it is easy to maintain. Use your regular cleaner as always and then use the Sweets or CR-10 (according to their directions) a couple of times and it will be clean & ready to go.
You'll be amazed at how much better the gun will shoot after getting all the copper out! <img src=icon_smile_big.gif border=0 align=middle>