Quick Answer
After a hunting trip with a .357 Magnum, clean the rifle within 24 hours to prevent rust and corrosion. Start by removing the magazine and clearing the chamber. Use a soft brush to sweep away dirt and debris from the barrel.
Pre-Cleaning Preparation
Before you begin cleaning your .357 Magnum, make sure you have the right supplies within arm’s reach. You’ll need a soft-bristled brush (like a bore brush), a cleaning rod, some Hoppes No. 9 or equivalent gun oil, a patch cloth or microfiber cloth, and some gun cleaning solution. Lay out a flat surface to work on, and ensure it’s free from any clutter or obstructions.
Cleaning the Barrel
Insert the bore brush into the cleaning rod and attach a patch cloth or microfiber cloth to the end. Apply a small amount of gun cleaning solution to the cloth, and then insert the brush into the barrel. Run the brush through the barrel 5-7 times to loosen dirt and debris. Remove the brush and discard the patch cloth. Repeat this process 2-3 more times, using fresh patch cloths each time, until the cloth comes out clean.
Lubricating and Final Inspection
Once you’ve finished cleaning the barrel, apply a small amount of gun oil to the bore brush. Run the brush through the barrel 5-7 times to lubricate the rifling. Remove the brush and wipe down the exterior of the rifle with a soft cloth to remove any dirt or debris. Inspect the rifle to ensure it’s free from any remaining dirt or debris. If necessary, repeat the cleaning process.
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