[ QUOTE ]
I only use moly coated bullets in high volume varmint cartridges. In my opinion, it does reduce copper fouling considerably. However, I don't over do it and clean my rifle bores regularely.
[/ QUOTE ]
On the money. I use it in my .243 for PD and target shooting. I can shoot it for several days with no drop off in accuracy. I will always use moly for my varmint rigs.
As far as the bigger bores, I would leave it alone. You have to clean them more often, who wants to waste a few of those to settle the bbl back in.