Molly coating bullets yes or no

tigrr

tigrr

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I have seen first hand the results of molly coating. Higher bullet speeds, more powder used and no pressure signs, not having to clean the barrel for 500+ rounds without loosing accuracy. Cooler barrel. I have a kit that came with a Lyman tumbler, but the tumbler died. I kept the bowl though. Might buy a new tumbler to continue.
So my question is how many do molly coat their bullets?? ie; molly then wax
 
I bought some moly bullets once. Didn't notice a difference and didn't bother cleaning before or after and everything is fine. Hardly clean that rifle anyway as it is. Definitely a lot longer then every 500 rounds.
 
A friend of mine has used Moly bullets since before any write-ups in the gun rags made it popular. He doesn't use them for the ease of cleaning or ballistic increase.
He swears by them to increase barrel life in caliberes that are notorious for throat erosion at low round counts. He has numerous custom rifles with Ron Smith barrels on them with many hundreds of rounds of only moly bullets thru them. Not one of them have shown any performance degadation since new.

More than once I've heard him coment that " I've had to change a lot of barrels on guns but never on one that has only shot moly bullets".
 
I used to moly using the NECO process (RCBS Sidewinder) - still have everything, but I have been coating with hexagonal boron nitride (hBN) the past couple of seasons (still with the RCBS Sidewinder). One less step (I never thought that putting wax in a barrel at high temperature was a good idea), less health issues, less point of impact change when clean & similar ballistics/loads.
 
I used them for a bit in the mini14.... I found once the barrel was hot the moly started to gum up in the barrel, It was a ##### to clean, the accuracy went to #### and the velocity stared swinging all over the place.
I was very disappointed, i found the more I shot the worse this got and eventually i gave up and went back to normal Vmax rounds and the gun shoots better.
 
LordEvilPepper said:
... in the mini14 ... the accuracy went to #### ...
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LOL - took me a while to learn that 55gr FMJ in a 1x7 twist mini wasn't the way to go, bare or moly ... things you learn along the way (and why)! Never could get the ranch rifle to do better than 1.5 MOA, even with heavier bullets.
 
This is for my .338 - 250 and 300 grain scenars. Want to get more velocity to be able to reach 2500 yards with the rifle as is. Presently the set up can sight the target at 2300+ yards. If I can gain using molly and get that 200 extra yards, it would be good. Hence all the questions on how it performed.
 
This is for my .338 - 250 and 300 grain scenars. Want to get more velocity to be able to reach 2500 yards with the rifle as is. Presently the set up can sight the target at 2300+ yards. If I can gain using molly and get that 200 extra yards, it would be good. Hence all the questions on how it performed.
Click to expand...

Using moly can get you another 50-75 fps for some cartridges, at the same chamber pressure.
 
fingers284 said:
A friend of mine has used Moly bullets since before any write-ups in the gun rags made it popular. He doesn't use them for the ease of cleaning or ballistic increase.
He swears by them to increase barrel life in caliberes that are notorious for throat erosion at low round counts. He has numerous custom rifles with Ron Smith barrels on them with many hundreds of rounds of only moly bullets thru them. Not one of them have shown any performance degadation since new.

More than once I've heard him coment that " I've had to change a lot of barrels on guns but never on one that has only shot moly bullets".
Click to expand...

stubblejumper said:
Using moly can get you another 50-75 fps for some cartridges, at the same chamber pressure.
Click to expand...


Is it worth it for .308 Win? I'm shooting maximum 600m for the time being until I get a better feel for reloading etc.
 
critique about the video: he mentions the low spots will eventually become the high spots in the bore ? that would only be true if you fired a couple moly bullets and then stopped using it ! otherwise if you continue using the moly, it will keep laying down coating ... so you wouldn't stop depositing a film

i've used moly and WS2 ... still have one gun that i use WS2 in

i'm not seeing a benefit to it in a match barrel that is lapped ... at least in the .308's cal i've used (not a varmint cal fan )
 
I have been using it for years. You will need to increase your powder charge when using moly coated bullets to get the same velocity as bare bullets. With moly you have less friction which also means less pressure and less velocity. In a .308 using 155 gr bullets you need to increase the load by about .5 gr.

As far as moly coating increasing barrel life, that's a tough call. Barrel on my match rifles are replaced between 4000 and 5000 rounds, about the same as a barrel that has never seen a moly coated bullet.
 
I have been using V-Max molly 50's for years now in my swift. My groups are still amazing ,I find I use max or near max loads without pressure problems & velocities are up.
My barrel is button rifled Stainless ,I clean regularly but am not finatical about it. I cann't speak about other guns / loads , but.. 1 1/4" groups @300 yds @ 4100fps is enough for me to continue using them !
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