Cleaning a Molly coated barrel
Is the anything special you need to do ( or not do ) when cleaning a Molly coated barrel?
Bud Do you want to scrub out all of the Moly or just clean the barrel and keep shooting Moly coated bullets? Don
Up to you...
Not really. Clean as you would if using uncoated bullets.
A recommendation from Walt Berger stated that to just use a clean patch followed by swabbing with a Kroil soaked patch, followed by a clean patch. This will work as well. The choice is yours. Using Walt's method leaves a small amount of surface moly in the barrel. Judging by Walt's match results, this can't be bad.
You might try a test group after each method just be be comfortable.
Last edited by virg; 02-16-2012 at 05:55 PM.
Reason: spelling correction
This is what Walt Berger (Berger Bullets website FAQ http://www.bergerbullets.com/Informa...html#cleanmoly ) had to say on the subject:
Originally Posted by virg
Q: If I use Moly Coated bullets how should I clean my barrel?
A: The following is one way to clean when using Moly Coated bullets. It is not likely the only way you can clean if you are using Moly Coated bullets.
1. Push one patch wet with Kroil Oil through the barrel
2. Repeat step 1.
3. Push one dry patch through the barrel.
4. Repeat step 3.
5. Push one patch wet with Butch's Bore Shine through the barrel.
6. Repeat step 5.
7. Let the barrel soak for 5 to 10 minutes.
8. Push one dry patch through the barrel.
9. Repeat step 8.
10. Using short strokes back and forth push one patch wet with USP or JB Bore Paste through the barrel.
11. Push one patch wet with Kroil through the barrel.
12. Repeat step 11 twice.
13. Push one dry patch through the barrel.
14. Repeat step 13 three times.
15. Use bore scope or visually inspect muzzle for copper fouling.
16. If copper is present repeat steps 10 through 15.
17. If you are storing the rifle push one patch wet with quality gun oil through the barrel.
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Q: How do I break in a barrel using Moly Coated bullets?
A: Moly Coated bullets will not shoot consistently until a barrel is properly broken in with Moly Coated bullets. Walt Berger has found the following procedure to work best in his barrels.
For a new barrel:
1. Shoot one Moly Coated bullet then clean using the Moly Coated cleaning procedure listed above.
2. Repeat step 1 five times.
3. Shoot three Moly Coated bullets then clean using the Moly Coated cleaning procedure listed above.
4. Repeat step 3 five times.
For a broken in barrel:
1. Thoroughly clean the barrel.
2. Shoot ten Moly Coated bullets then clean using the Moly Coated cleaning procedure listed above.
Your barrel is now ready to shoot Moly Coated bullets.
I want to keep shooting Molly coated. I do not want to remove all the coating in the barrel, just enough to have good contact with the lands for the spin.
better living throught better chemistry...let the chemicals do the work.....
skip the brushes...it disturbes the moly coating...which you want left on the bore.
what was not pointed out is the carbon is not your friend and a carbon remover is required( where walt was using an abrasive).
so start with a carbon remover, then a copper remover......
gm tec(top engine cleaner) works well....
mike in co
PS do a search on the benchrest forum its been talked about
Mike have you ever mixed GMTEC with Butches or any other solvent?
.. .. .. paragraphs 9 and 10.
To each his own, I guess.
Walt is in the business of selling bullets, and Hart is in the business of selling barrels.
Douglas told me in a PM on this forum to never put JB down one of their tubes or they could not honor any return of their product ........
You experts with the bore scopes can arrive at answers I can only speculate at.
Not trying to be argumentative, just pointing out the information by qualified sources is all over the place. I haven't made up my mind whther to shoot moly in my new barrel or not....
If, as you say, you want to continue using coated bullets you can do a good job with The Wipe Out product Patch Out. It cleans just like the foam, but isn't as messy and you apply it with a cleaning patch. Coupled with Accelerator (same company), you can get a clean bore in about 15 minutes after one application in most cases. I tend to shoot two yardages (Score Shooting) and clean my rifles the next morning (100-125 rounds). After about three matches, I polish the throat with Rem Clean.
If you're asking me, no. I shoot "Danzac" or HBN coated bullets. I've shot the Danzac for years, but have started this year on HBN. It's slicker & cleaner, but it's too early to tell if it shoots the same. After one match, it looks good.
Originally Posted by Bud
If you're not asking me, then never mind.
One thing I discovered a long time ago was that leaving Kroil in a barrel that moly coated bullets were to be shot through for an extended period of time will cause you all manner of grief. It does exactly what it says on the can, gets under the moly and lifts it off the bore. If my brain had been working better/faster I'd have figured this out sooner than I did, because a clean patch run through the bore with Kroil left in it came out with black flakes on it after sitting for a month (once a month winter matches). The verticals were something to behold at 300 yards, but after 10 or 15 shots things calmed down. The solution I went to was to mix some moly powder in light oil (gun oil/3 in 1) and after cleaning the barrel (per Walt Berger's method shown above) I just short stroke a patch with a few drops of this mixture through the bore. No more problems. I think that there are some commercial preparations that do the same thing, but a small eye drop bottle (well cleaned and dried) works well to hold, mix, and dispense the moly/oil mix. It's cheap too, and if nothing else I like cheap.
Originally Posted by Larry Elliott
I'll second that.... about leaving it to soak.
no....not a chemest...so decided to just use it by itself.
carbon is an issue with any coated bbl. so use something that does nto disturb the coating.
i have gone to HBN in my 1000 yd gun...seems easier than moly but just started.
mike in co
Originally Posted by Rflshootr