Quick Answer
Prepare a new barrel for weekend matches by first cleaning it thoroughly, then applying a thin layer of break-in lube to the bore, and finally running 10-15 rounds through it to allow the rifling to seat properly.
Cleaning the Barrel
Begin by disassembling the rifle or handgun and thoroughly cleaning the barrel with a high-quality cleaning rod and solvent. Use a soft brush to scrub away any debris or residue, and then dry the barrel thoroughly with a clean cloth or patch. This will ensure that the barrel is free of any contaminants that could affect its performance during the break-in process.
Applying Break-In Lube
Once the barrel is clean, apply a thin layer of break-in lube to the bore using a cleaning rod or swab. Start at the breech end of the barrel and work your way forward, using about 1-2 drops of lube per foot of barrel length. This will help to condition the rifling and reduce friction during the break-in process.
Running the Barrel In
After applying the break-in lube, run 10-15 rounds through the barrel to allow the rifling to seat properly. Start with a low-powered load and gradually increase the power as you continue to fire the rounds. This will help to distribute the lube evenly and allow the barrel to break in properly. Avoid firing high-powered rounds through the barrel until it has been fully broken in, as this can cause excessive wear and damage to the rifling.
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