optima silk,

I used moly coated Lapua Scenar 0.308 155s for fifteen (15) years in my custom BAT rifle.

I had the luck to buy 1000 of them for £12/100 in the year 2000

What I can tell you :

1) The moly coating did not increase accuracy compared with standard, un-coated Lapua Scenar 155s, nor was the ballistic performance increased. Both grouped in 0.15" to 0.25" (10 shots) at 100 m.
2) For a custom, finish lapped barrel like I had (Krieger cut rifled, 0.298" internal dimensions), the moly coats really did not make much of a difference to the amount of cleaning needed.
3) Despite the moly, small amounts of copper were still deposited, along with moly & powder residue.
4) Cleaning - I used IOSSO bore paste to clean my bores, and it took the same amount of effort to clean after the moly coats, as it did for the un-coated. Two short stroke passes with IOSSO Bore Patse on a cotton patch wrapped around a 7mm bronze brush, a check with Butches Boreshine for residual copper, and that was it.

It seems that moly, as has been said, was a fad that has now passed.

A chappie from Sierra bullets (Mr. Kevin Thomas) did a test for Precision Shooting magazine, and found that moly did not increase barrel life, did not increase accuracy, did not alter the ballistic performace, and did not materially decrease the cleaning requirements.

It seems the only thing that was definitive about moly, was that you had to increase the powder charge to get the velocity back up to that of the un-coated bullets - this seemed to be in the order of 0.5 to 1 grain more.

I never suffered from the other moly characteristic - the first round or two after cleaning not being in the group.

So, don't bother about moly

If you do, invest in some IOSSO Bore Paste !

Have fun & a good Sunday,

Best regards

Russ