HXP 303 ammo corrosive? found rust in my barrel

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Originally Posted by Micky Duck

Ive rejuvinated more than one old tired black exmilitary bore over the years by gently plugging muzzle and filling with CRC 5.56 sort of stuff and leaving it sitting muzzle down over night then giving a good dung out with copper brush... then rags till come out clean... the other part of hot water cleaning that hasnt been mentioned is if you do the oily rag through it while its still hot..it sort of cooks on..it comes back to the youngs 303 or ballistio..not right name the Gerries used.. both were cleaner and also medicinal...smells like jeyes fluid..thats the tar bit..both were similar

we have come a long way since then but basic idea is still the same....
clean,lightly oil and store.

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To clean sewer pipe bores I've used "bullets" of steel wool and pistol powder that shifts rust, carbon, copper, and mason bee clay very very effectively showing you what you have very quickly "without harsh scrubbing"

Any of the Greek HXP .303, .308 or .30-06 made since the 1960s is non-corrosive but as others have said, carbon can ruin your bore if not removed (copper kills accuracy, carbon kills bores).

A trick for all players is that mixed through the 1970s .303 and .30-06, I have found the odd round of corrosive British, French and American mixed in with the Greek stuff. It pays to check your head stamps.....

I went for walk yesterday with blued rifle..got home and sat it on couch in warm dry room overnight,cleaned it this morning and there was two good sized rust patches on action where sweat from my hands were..... for sure they came off easy enough but it goes to show how little it takes both in time and moisture.

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Originally Posted by csmiffy

Collins 90 seems to work OK. Was recommended to me.
Don't know about its comparison to hoppes but was told hoppes wasn't as good as it used to be.
I haven't done enough barrel fouling to see

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Probably removed all those carcinogenic goodies that did the dirty work.

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Originally Posted by zimmer

Gun shops give weird advise on
occassion. Some of them have good knowledgeable staff whilst others, although they sell the stuff, have low practical experience.
The fact that your brushes are not disolving says something about the effectiveness of your Cu solvent.

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Well I'm not too worried about copper solvent for now, but it should still be OK for removing powder residue.

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Originally Posted by fernleaf

Any of the Greek HXP .303, .308 or .30-06 made since the 1960s is non-corrosive but as others have said, carbon can ruin your bore if not removed (copper kills accuracy, carbon kills bores).

A trick for all players is that mixed through the 1970s .303 and .30-06, I have found the odd round of corrosive British, French and American mixed in with the Greek stuff. It pays to check your head stamps.....

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Yeah its impossible to mix this stuff up, they are all tarnished from the bunker, definitely no CAC or any other brands mixed in.
I would be interested to see how this rust compares from a corrosive primer.