Copper Remediation of the rifle bore can be done if excessive copper fowling is experienced.
IMPORTANT NOTE: This procedure is to be done as needed AFTER the first 13 steps of the Long Range Precision Rifle Minimal Disturbance Cleaning Regime have been taken as shown in the preceeding video.
Be sure ALL the carbon fouling has already been cleaned form your bore and that all other solvents have been thoroughly removed.
Copper Remediation steps are as follows:
1. Wet a patch with Sweet's 762.
2. Push the patch through breach to last 1 inch of the muzzle
3. Fill last inch of bore with Sweet's 762
4. Slowly pull rod back out towards chamber, stop when you reach the throat
5. Wait 3-5 minutes for soak, slowly push patch back out and exit the muzzle. Save solvent if you can.
6. Scrub the bore with 10 passes using patch on jag, or until copper has been removed,
7. Chase copper solvent out of the barrel using patches wetted with WD40 followed by clean patches until completely dry.
NOTE: You will have to reestablish copper equilibrium each time you remove copper if you did not use the full Benchrest Shooters Barrel Break-In Procedure. This typically takes anywhere from 20 to 60 rounds. You will know when you've achieved equilibrium when your group sizes shrink and your MVs stabilize.
Only clean copper out of your bore if necessary. The less you disturb the bore, the less MVV and POI shift you will experience. Minimal disturbance is ideal for our shooting discipline. Only clean when needed.
Sidenote: Many copper removing formulas use activated positively charged ions that have an affinity for copper and its oxides. When these solvents are soiled with copper fouling, they become even more positively charged with dissolved Copper and that attacks hardened copper in bore more aggressively than would clean solvents. SO using these solvents is advised if the bore is free of all other chemicals and powder fouling.
Semi Auto
