Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Varmint Al's barrel break-in method
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Mikecr" data-source="post: 2660663" data-attributes="member: 1521"><p>Moly does extend accurate barrel life -if managed. That management includes extended cleaning intervals with abrading it back to baseline. Otherwise, moly will reduce accuracy, and accurate barrel life overall, because it sticks to itself (wiping), causing constriction. That's it's disadvantage. </p><p>It does not reduce erosion nor velocity, because it's slippery. Moly in particular reduces heat/pressure as it vaporizes. Latent heat.</p><p>That's a benefit and what causes lowered velocities.</p><p>Moly, like most other coatings reduces copper fouling, as the loose copper doesn't stick to it well.</p><p></p><p>So for your goal of improving barrel life, with use of moly, I can see why you would conclude that polishing a bore is a good thing.</p><p>But for those of of us concerned about copper, polishing is bad and never good.</p><p></p><p>A better coating is tungsten disulfide (WS2). It is a universal fouling, that reduces copper, and cleans out well enough without use of abrasives.</p><p>While way slipperier than moly, WS2 does not affect velocities/pressure. It also does not affect accurate barrel life one way or the other.</p><p>It cuts copper fouling by ~1/2.</p><p>I dry pre-foul every gun barrel(long & short) I have with it, after cleaning. This, so my first shots are always on the money.</p><p>That's a big benefit for me.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2660663, member: 1521"] Moly does extend accurate barrel life -if managed. That management includes extended cleaning intervals with abrading it back to baseline. Otherwise, moly will reduce accuracy, and accurate barrel life overall, because it sticks to itself (wiping), causing constriction. That's it's disadvantage. It does not reduce erosion nor velocity, because it's slippery. Moly in particular reduces heat/pressure as it vaporizes. Latent heat. That's a benefit and what causes lowered velocities. Moly, like most other coatings reduces copper fouling, as the loose copper doesn't stick to it well. So for your goal of improving barrel life, with use of moly, I can see why you would conclude that polishing a bore is a good thing. But for those of of us concerned about copper, polishing is bad and never good. A better coating is tungsten disulfide (WS2). It is a universal fouling, that reduces copper, and cleans out well enough without use of abrasives. While way slipperier than moly, WS2 does not affect velocities/pressure. It also does not affect accurate barrel life one way or the other. It cuts copper fouling by ~1/2. I dry pre-foul every gun barrel(long & short) I have with it, after cleaning. This, so my first shots are always on the money. That's a big benefit for me. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Varmint Al's barrel break-in method
Top