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CR-10 Bore Cleaner
Barnes’ specially formulated CR-10 bore cleaning solvent effectively removes copper and powder fouling. This aggressive bore cleaner quickly loosens and lifts heavy copper deposits left by jacketed bullets as they pass through the bore. Leaves rifling clean for better accuracy and longer barrel life. CR-10 bore cleaner is non-corrosive and won’t harm barrels. Offered in 2 and 8-ounce bottles.
CR-10 - Concerns
Lately we have had a rash of calls asking if CR-10 will damage your rifle bore. The answer is of course, No. Let me explain. CR-10 along with most other copper cleaning solvents contains ammonia to remove the copper. Ammonia attracts moisture, which in turn causes the clean steel to rust very quickly. We have tested barrels submerged in it for 18 months without any damage to the barrel. An oil patch is also recommended after cleaning to deter the rust process.
When using CR-10 cleaner, why are my patches coming out blue?
The ammonia in CR-10 will react with the copper in your barrel and create a blue residue. We recommend running soaked patches through your barrel until they come out white. Also, run a dry patch on a jag or nylon brush down the barrel when finished to ensure any excess CR-10 is wiped out. Remember to follow the directions and don’t leave the CR-10 in the bore for more than fifteen minutes.
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