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

Originally Posted by Barry the hunter

Winchester M69A is correct - sorry inadequate cleaning - remember oils coat solvents penetrate - one can put an oil over corrosion and its still there - - old 303 ammo - very carefully with a small funnel pour boiling water down barrel -that gets rid of the salts - then use hoppes no 9 or other good nitro powder solvent -you could if you have fired a few rounds carefull use of a bronze brush - but dont over do it - you can love a barrel to death - leave overnight or even a few days - rag will come out green - thats metallic fouling coming out - when no more green tinge on rag then put thru a quality gun oil like Remington oil - check barrel after a week or two - the rag says it all red brown rust - grey likely dust - green still metallic fouling coming out- some barrels worse than others for metallic fouling - I had a Tikka .308 early one and no matter how much bloody hoppes still showed metallic fouling even after bronze brush and leaving for periods

Ok, I haven't been shooting the corrosive CAC stuff yet, but I do have a bunch of the stuff.
With modern ammo, would I have to use a solvent like hoppes after each use?
I thought that the solvent was mostly for removing copper fouling?
When I got the gun, I put a fair few patches soaked in hoppes through the barrel, they came out very dark, almost black.
Didn't see green come out with my gun, but perhaps I need to soak it for longer?
Anyway, my main concern is rust, if the powder residue can attract moisture, I'm assuming that removing the stuff with solvent and a brush after shooting is required?

Edit:
BTW, the "oil" i used was called easeox, supposed to be a cleaner, solvent and protectant all in one.