Thread: HXP 303 ammo corrosive? found rust in my barrel

Originally Posted by No.3

So you're going to try to convince me that your what, 100 year old .303 has never shot corrosive ammo before?

Clean accordingly, hot water...

It's 1940s so not quite 100 years old! But yes, it's bound to have had tons of corrosive ammo go through it.
Anyway when I had the barrel installed, I gave it a good scrub up and down with the brush and hoppes no9 cleaner, then put patches through until they came out clean. It's a good barrel with 1 inch groupings, so I hope it hasn't done any damage.
Should I be cleaning with hot water after every use, even if it's not corrosive primed?

Originally Posted by winchesterM69A

The residue of burning gun powder is hydroscopic so attracts moisture. The air is high in moisture at this time of the year. Your cleaning and post-clean care is inadequate.

I had put a light bulb in my safe which has helped with dampness immensely.
Anyway, I never realised that powder residue attracts moisture.
So is a cleaning patch not enough after each use? How often are you supposed go clean/oil the barrel?