butchlambert
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I guess that we are bored. 3 new threads started on this topic weekly. We do have a search function. Probably enough there for a years reading.
Nylon brush??
Nylon brush??
I did do a search. I dont belive in barrel break in but i did it since they recommended it. I was trying to see the general consensus of when people saw a decrease in fouling. Shilen chambered it.
View attachment 1013661
How's this for a Shillen barrel coppering !!!
It was like this for the first 100 to 150 rounds. And it was nearly impossible to get all the copper out.
Now it doesn't get any copper fouling, only powder fouling. I haven't seen any copper fouling for the last 900 rounds.
It's a 243win.
Exactly right. Dry bores promote copper fouling. WET a patch with a good oil (Butches or Marvel Mystery Oil), then run a loose fitting clean patch through to remove the excess and your done. Stay away from oil that has teflon-Rem Oil. Many shooters fear oil will prolong the fouling process......I've never seen it in any of my bench guns. Mostly one fouler and their shooting POA, never took more than two in any of my premium barrels.I don't like to shoot a "dry bore".
There may be something to that, but I've never seen it.
For my part, I shoot moly-coated bullets in a custom stainless barrel (250 Ackley). Not a single bare copper bullet has ever been through it. Probably only 800 rounds over 20 years. No special cleaning regimen, no accuracy issues to address. Then a couple of years ago I got a Lyman borescope, and looked through the chamber and barrel for the first time. I was shocked by just how pristine it was, no build-up of any kind evident, and (incidentally) no tool marks in the bore. FWIW it's an electro-polished BlackStar AccuMax II, "SS700" (aka LW-50?) alloy.
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Not sure how it could be improved, it's just molybdenum disulfide powder.Interesting. Decades ago when I was shooting high power matches, I had contacted Sinclair regarding moly bullets. At the time they were all high power competitors too. They stopped carrying them but would special order them if a customer wanted. They are the ones that told me moly, if not removed correctly and thoroughly, would promote rust and they have seen pits caused by moly. Maybe the product has been improved since then.
That is Shilen, not Shillen. Looks like an 8 groove barrel. Now what is the rest of the story?
SS or CM?
Lapped or not?
Chambered by?
Barrel prep or breakin?
Cleaned after----rounds.
Bronze brush or nylon?
What did Shilen say?
I'm kinda old and slow. First post you said it copper fouled and this post says no copper.
I'm kinda old and slow. First post you said it copper fouled and this post says no copper.
I did do a search. I dont belive in barrel break in but i did it since they recommended it. I was trying to see the general consensus of when people saw a decrease in fouling. Shilen chambered it.
Took it out for load devolpment and shot a group with bergers and then cleaned with butches. Very very little copper. Shot another 10 rds and cleaned no copper, and it only took 5 patches. 2 wet then brushed it 2 strokes then one dry, one wet let it soak and then a dry. No blue at all after the soak. Also velocity looked liked it was picking up, couldnt get a good number because my chrono took a crap half way through.
Well it happened when the copper stopped. With the 10 sighter rounds i had velocity started at 2545 and right before the chronograph quit i was at 2670 fps. I would assume it has to do with the throat being smoothed out a bit.