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Old 02-12-2013, 08:56   #7
Sinister
Quiet Professional
 
Join Date: Jan 2004
Posts: 259
I've shot literally thousands of moly-coated 5.56 and 7.62 bullets. I've probably got 500-1000 175-grain Sierra Match Kings left.

Do they make a difference as far as accuracy or precision? Not that I can tell.

Conventional wisdom (as far as precision and competition goes) was they were supposed to extend the number of precision groups you could shoot between cleanings.

Moly contributed to less jacket distortion (by the rifling) and gave smoother laminar airflow over the bullet profile while in flight.

The price difference was around $2-10 for 500 bullets (as reloading components). You would need a little more powder to get the same velocity as standard jacketed bullets because slicker moly bullets had less drag in the barrel.

They are less popular as competitive shooters found they do not give a marked advantage over standard bullets for the cost. You may still be able to get them as benchrest guys find they do give them a slight advantage (these are fellas trying to put five and ten shots into one single hole).
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