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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Opinions on the lyman moly coating system?
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<blockquote data-quote="Mikecr" data-source="post: 649766" data-attributes="member: 1521"><p>It's true(initially reduced velocities).</p><p>Moly flashes off with latent heat that cools the charge a bit. Most compensate with a bit more powder, which negates barrel life extension.</p><p>Moly also fills cracking edges, which reduces bullet jacket damage, extending life w/resp to copper fouling out only. That's good.</p><p>But a reason to stay clear of it is that it's intensive to manage both best performing coating amount, and cleaning to keep eventual bore restriction from forming. Once this restriction forms, you can't get it cleared without damaging the bore! It is wasted at that point.</p><p></p><p>Most shooters who coat have moved on past moly to WS2 or HBN. But these do not extend barrel life. I don't know of anything that does without a cost in velocity(your concern).</p></blockquote><p></p>
[QUOTE="Mikecr, post: 649766, member: 1521"] It's true(initially reduced velocities). Moly flashes off with latent heat that cools the charge a bit. Most compensate with a bit more powder, which negates barrel life extension. Moly also fills cracking edges, which reduces bullet jacket damage, extending life w/resp to copper fouling out only. That's good. But a reason to stay clear of it is that it's intensive to manage both best performing coating amount, and cleaning to keep eventual bore restriction from forming. Once this restriction forms, you can't get it cleared without damaging the bore! It is wasted at that point. Most shooters who coat have moved on past moly to WS2 or HBN. But these do not extend barrel life. I don't know of anything that does without a cost in velocity(your concern). [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Opinions on the lyman moly coating system?
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