which is better? What is your experience? Is it good to use moly coated bullets on breaking in a barrel?Does Moly give better velocities? Is Moly harder to clean out of barrel?Thanks

Have you searched this using the search engine? I would imagine there is a whole lot of info from the past. I am replying to you though since I occasionally post on snipersparadise.com and they have some great posts and comments on moly vs non. You will find that the majority say non-moly. Also, longrangehunting.com had some great threads here recently on it so check there also since there are some strong believers in moly there.

I dont have the exact reference, but a couple of years ago Rick Jamison did a very nice study using moly and non-moly bullets. It was published in Shootingtimes as I recall, and many shots were fired, so the data was statistically significant.

One thing I do remember was that moly gave lower pressures and velocities, presumably due to lower friction. Barrel life etc, was addressed but I do not recall the conclusions. I usually do not put too much weight on the data in gun-rags, but this was probably one of his better write-ups.