As September rolls in, many shooters are still active, but now is the ideal time to prepare your shotgun for the colder, wetter months ahead. While the season isn’t over yet, this transitional period is when your firearm becomes most vulnerable. Rust, pitting, wood swelling, and mechanical wear often develop quietly during periods of disuse, especially in the UK, where damp weather, unheated garages, and fluctuating humidity levels can wreak havoc on unprotected gear.
This guide offers a practical, field-tested approach to shotgun care as the season winds down. Whether you're focused on game, clays, or pest control, taking these steps now will ensure your firearm stays safe, functional, and rust-free through winter and into next season.
1. Know the Risks: Rust, Moisture, and Time
Corrosion begins quickly if left unchecked. Here's what speeds it up:
- Humidity above 60% encourages rust, particularly on blued steel.
- Salt from hands or sea air attracts moisture and promotes oxidation.
- Temperature swings, like moving a gun from a cold garage to a warm house, can cause condensation inside barrels and moving parts.
- Oil buildup inside the stock may degrade wood fibers and loosen inletting.
Wood is also affected by dry indoor heating later in the season, which can cause:
- Cracking
- Shrinkage
- Finish damage
Key point: Prevention now is far easier than costly repairs in spring.
2. Prioritise Safety, Then Fully Disassemble
- Unload the shotgun completely - check more than once.
- Disassemble it carefully:
- Break-action: separate barrels, fore-end, and action.
- Semi-auto: remove barrel, bolt, and gas/piston components.
- Take out choke tubes.
Tip: Use a tray or take photos to keep track of parts during disassembly.
3. Deep-Clean All Metal Components
You’ll need: Cleaning rod, bronze brushes, patches, solvent, cotton buds, and compressed air (optional).
- Run a solvent-soaked patch through each barrel, then follow with a bronze brush.
- Repeat until clean patches come through.
- Clean the chambers and forcing cones thoroughly.
- Scrub choke tubes and their threads inside and out. A dedicated choke brush can help.
- Use cotton buds and a soft brush on extractors, ejectors, and the trigger assembly.
- Blow out tight areas with compressed air if available.
Optional: A borescope can help check for hidden fouling or pitting.
4. Clean and Protect the Woodwork
- Wipe down wood surfaces with a lightly damp cloth.
- Use a soft brush to clean checkering.
- For oil-finished stocks, apply a light coat of stock oil (e.g. Tru-Oil or boiled linseed).
- For varnished finishes, use a wax-based product like Renaissance Wax.
- Avoid oil pooling where the wood meets metal.
5. Apply Metal Protection
- Lightly coat all metal surfaces with a quality gun oil (such as Ballistol, Break-Free CLP, or Napier VP90).
- Apply rust-inhibiting grease (e.g. Tetra Gun Grease) to:
- Choke tube threads
- Hinge pins
- Sliding rails (on semi-autos)
Preparing your shotgun now, while the weather is still relatively mild and shooting continues, gives you a head start before winter sets in. A few extra minutes of care in September can prevent months of damage, and ensure your firearm is ready the moment you need it again.
