Re: Moly or Naked
I handload; 19 Badger, .222 .223, 22-250 6mmBR, .243, 25acp, 25/35, 250/3000, 257 Roberts AI, 260, 6.5x55, 270, 7x57mm, 7mm Rem mag, 32acp, 32sw, 32S&WLong, 32-20, 7.62x25mm, 30-30, 303Sav, 300Sav, 7.62x39mm, 308, 7.5Swiss, 30-06, 300WM, 303Brit, 7.62x54R, 8x57mm, 338WM, .380, 9x19mm, 9x23mm, 357 Sig, 38 sp, 357 mag, 38sw, 40sw, 10mm, 10.4mm, 401 power mag, 44mag, 45acp, 45Colt, 452/70, .410, 45/70, and 12 ga.
I started 257RAI in moly in 2002, and have been adding more cartridges to the moly discipline ever since.
I now also use moly for; .223, 6mmBR, .243, 25/35, 260, 270, 7x57mm, 7mm Rem mag, 30-30, 308, 30-06, 300WM, 7.62x54R, 8x57mm, and 338WM.
In general if it is over 2600 fps, I use moly.
In general if it is over 3600 fps, I slow down.
The carrier in spray can moly coating is so toxic, don't even think about breathing around it.
In general, Lyman ceramic media for moly coating sucks for .224" bullets.
Steel BBs work better and can be magnetically separated.
Lead tipped bullets will make lead contamination in the moly coating process, and lots of stuff then needs to be thrown out or possibly cleaned.
Waiting for moly to shoot in takes too long, so I burnish a clean bore with Moly bore cream, and try not to breath the fumes from the first one and only fouling shot.
Walt Berger's moly regime is what got me into Kroil. Walt doesn't work there anymore, and his link is dead. I do a varmint version of Walt's benchrest moly discipline.
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http://www.bergerbullets.com/faq.htm Q: Should I shoot Moly Coated bullets?
A:
Any shooter who goes through a lot of rounds during a shooting session
should use Moly Coated bullets. Moly is a dry lubricant that allows you
to shoot more rounds before you have to clean. Since you get less
fouling using Moly Coated bullets the accuracy level of your load will
last longer within a shooting session. If your load did not shoot
without Moly, adding Moly will not make your load shoot. Moly does not
eliminate the need to clean your barrel. You just don't have to clean as
often. Moly will reduce the pressure of your load, which will result in
a slight loss of velocity. In most situations a little more powder can
be added to get you right back to the velocity you want to shoot. If you
are shooting a compressed load with non-Moly bullets you may not be able
to add more powder. It has not been conclusively proven that premium
accuracy life of a barrel will be extended using Moly. However, since
you don't have to clean as often due to reduced fouling premium accuracy
during a particular shooting session does last longer.
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.
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.
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What does it all mean?
Moly is to make Copper fouling happen slower and clean up faster.
It does not have as big an effect as buying a factory lapped barrel, but it does have an effect.