Raf, when moly first came out I questioned it's use as the pressures in say a 30-06 are over 50,000 PSI and the heat is tremendous as well. Fired bullets have the lands and grooves engraved/pressed into them. I just could not see how some lube was actually going to make a difference. Now after many years on the market, many experts agree that the benefits of moly( higher velocity, less barrel wear, better accuracy, and lower pressure) was over-rated. Also many users have found moly itself builds up in the barrel and is difficult to remove. Moly that has been left in the barrels over time has also been found to attribute to corrosion and pitting once it was removed to allow inspection. Right now other then the experts who have a financial stake in moly products, I personally do not know any expert who recommends it's use. Quite the opposite, many experts now agree that moly does more harm then good.
Quite frankly I was suspicious of it from the onset, refused to use it, and am now glad that I did.