Before using Moly coated bullets, you need to read about the process of coating and the barrel prep plus the differences in cleaning procedures.
I use moly coated bullets, both jacketed and cast and can't say anything but good things about moly.
Extended cleaning intervals, no leading or copper fouling and better accuracy. I honestly don't understand what the other post indicated, gunking his barrel! That makes absolutely no sense!
So I say YES, use moly and make sure you use Kroil, that seems to be the only compound that will get under the moly and keep moisture from pitting the barrel.
Matt