This is what Walt Berger (Berger Bullets website FAQ http://www.bergerbullets.com/Informa...html#cleanmoly ) had to say on the subject:

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.

wow what an ordeal, i thing i would use the oil and let it soak, to lighten up the moly, then some sweets, but it will come out.

wow, reading his thought on bore break in, the barrel makers like to hear his thoughts,...lol interesting, and funny. maybe he should bore scope the barrel before and after, then he would not make those claims. oh well different strokes for different folks. now go buy another barrel.

Yea, tell Walt how to.

after reading about what Hart bbl's and Douglas has to say about barrel break in, and molly bullets. i had a M98 with a douglas barrel in 30-338 win mag, great shooting gun. but i don't attempt to cause excessive wear in my barrels with abrasive cleaners. i don't want to wear down the land's before their time which will happen soon enough without pumis cleaners.

use MEK... best stuff...