- Joined
- Jun 9, 2016
Hey guys, I'm totally a gun newbie, and was wondering if I could ask a question.
I picked up a 1973 Ruger Single Six new-model, and took it to a range, put 100 rounds of CCI Mini-mag through it. No issues there, but afterwards the cylinder looked like this.
cylinder burn comes from shooting unhardened lead over a period of time with a normal powder charge (so not target loads) or from using HV .22 ammo and leaving a lot of unburned powder. the lead particles and unburned powder combined with carbon from the ignition leaves a ring of high pressure soot between the cylinder face and the forcing cone. this is normal in nearly all revolvers that lack a gas seal - it will be slightly shiny and slick to the touch but will not come off easily (lead-away will remove it... along with the bluing. as will vinegar, naval jelly, acetone, ATF, break cleaner, mineral spirits, kerosene, and other solvents).
that looks like normal lead rings, and isn't harmful - the cleanliness of the ring indicates a good cylinder gap with little end shake or play. if they were star shaped, off center, or "feathered" at the edges i would be a little more worried.
if you want to remove them without damaging the bluing (old models without the transfer bar were blued or nickel, but new models could be blued, stainless with black oxide or epoxy finish, satin, or nickel). use a rag with Hoppe's #9 and apply gentle pressure with your finger to "twist" the bluing off. it takes little pressure as it's "baked" on with heat and pressure, but lacks any mechanical locking or chemical bonding.
lead-away cloths, flitz, mother's mag polish, et c will remove the bluing. do not use them on blued firearms.