Frosted bore
- Thread starter yes man
- Start date
Not much you can do.
Have gone at a few darker ones with Evaporust, this after deep copper fouling stripping.
The edges of the rifling did eventually become somewhat sharper, but the bore's only marginally brighter.
One the other hand, some of those frosty/darkies shot quite well ... but quicker to foul, and harder to clean
Have gone at a few darker ones with Evaporust, this after deep copper fouling stripping.
The edges of the rifling did eventually become somewhat sharper, but the bore's only marginally brighter.
One the other hand, some of those frosty/darkies shot quite well ... but quicker to foul, and harder to clean
A "frosted bore" is a polite way of saying a "pitted bore". It generally means fine pitting which leaves the barrel shootable but prone to stripping off bullet jacket material and thus becoming fouled more quickly than it otherwise would. Pitting is the aftermath of rust and means that metal has actually been removed from the surface by oxidization/corrosive action.
Northman999
CGN Ultra frequent flyer
- Location
- Southern Yukon
On a side note, a pitted bore can still sometimes shoot pretty good.
I've got an old jungle carbine, with a bore that looks like orange peel, that shoots better than most other LE's I've owned. Someone before me did a good accurizing job on the rifle, and, in spite of the look of the bore, it's a great rifle.
I've got an old jungle carbine, with a bore that looks like orange peel, that shoots better than most other LE's I've owned. Someone before me did a good accurizing job on the rifle, and, in spite of the look of the bore, it's a great rifle.
"...what is a frosted bore...rusted?..." Sort of. Frosting is the beggining of rust. The steel looks just like it has hoar frost on it. Nothing will remove it though. As mentioned, some rifles will shoot just fine despite being a bit rusty. Isn't in any way a safety issue either.
That's my method also!! I clean them as good as I can, I've also used toothpaste with a tight patch which I've found does the trick. Then I shoot the gun and clean it again, shoot some more and clean again!!
I have several rifles with "frosted" bores and they ALL shoot just fine. The only problem I've had is they take a lot longer to clean because the pits in the bore hold the fouling and therefore the patches come out looking dirty pretty much no matter how much I clean.
So that being said I give my frosted bores a good cleaning and then oil them, even if the patches are still coming out grey. They seems to always come out looking dirty but I find that's just the way it goes with a frosted bore. With use I've found that the pits get less and less noticeable and in some cases the bore starts to get some shine after several hundred rounds of use.
Flitz is advertised as a non-abrasive polish and cleaner. It will shine the bore up and remove oxidization. JB Paste is an abrasive cleaner specifically made for rifle bores. JB Paste has been in use for a long time. It will remove metal fouling as well as a trace of the bore steel itself. I've used JB paste for many years with good results. Just follow instructions and don't over do it.
JB paste is applied with a tight fitting patch and the bore is stroked "X" number of times per the instructions on the container. The bore is lightly oiled before and after application. Wholesale Sports sells it. It may also be available from other vendors.
