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

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.

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"