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

Originally Posted by Old_School

Been a while since I used my enfield, but put about 20 rounds of Greek HXP through it.
Noticed rust in the barrel after pulling it out today.
Is this just from moisture or from the ammo? I was pretty sure this stuff is supposed to be non corrosive.
It appears it might just be at the last 50mm of the barrel from what I can see.
I put a cleaning patch through after shooting, with a light oil, but that's about it.
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I should have added boiling water only needed with corrosive primed ammo - back when target shooting and ex 1958 .303 ammo yes boiling water after every shoot - but rest of what I put stands - hoppes no 9 or equivalent nitro powder solvent after shooting - you can leave this in overnight - but others right suspicion of moisture where it was stored - but if barrel had been protected with the hoppes regime maybe rust would not have gained a foot hold