Moly or bare bullets that is the question ... Lets stop speculating about this ..
Fact
If you fired identically loaded moly & non moly coated bullets you would find that the moly coated bullet is travelling SLOWER and has generated less pressure in the chamber. This is because of the lubricating effect.
Sean,
What you found using a mix of bullets is that wind had a larger effect on the moly coated bullets .. thats because they are travelling at a lower velocity, the vertical was caused by the same phenomen which would have resulted in a change in zero .. simple as that.
I dont think anyone would advocate using mixed bullets in a match anyway.
I spent the next two details in the clubhouse scrubbing this stuff from the projectiles.
Unless you scrubbed the moly out of your barrel as well you were only wasting your time.
The benfits of moly are based around the ability to run the rifle longer between cleanings eg with my old 300 WM barrel I could shoot an entire Fly match without cleaning using moly bullets and not see an difference in accuracy. Using bare bullets I had to clean every 2nd or at most 3rd target.
The other advantage is that the drop in pressure and subsequently in muzzle velocity meant I could use more powder (no real major benefit in velocity). What this did allow me to do was run close to 100% load density, which I prefer to do.
I also managed 1628 rounds out of a moly barrel when previous barrels had passed on around the 1100 mark. Might not seem much but at 50 rounds per Fly match and 30 per 1000 yd match thats about 18 months - 2 years extra shooting on that barrel.
Either way each to his own .. I see no accuracy benefit in moly but it has other benefits IMHO. I use moly in some target rifles and not in others depends what the rifle prefers, I would not bother with moly in a hunting rifle.
by the way Sean .. everything you put down the barrel is abrasive.
cheers
Rinso
Moledium Disulphide is an abrasive.
