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

Originally Posted by Old_School

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?




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?

The Greek is non corrosive and is effectively Winchester ammo as it was made on a complete plant sent to Greece by the USA as part of a nato agreement. I suspect it’s simply powder residue and the dampness we are currently experiencing. Powder fouling will attract moisture….