hi
what are the virtues of moly coating? and what are the disadvantage of moly coated bullets?

regards
yes

positive...SOME gunbarrels shoot the molly coated bullets more accurately for longer periods between cleaning-or accuracy falling off.....LONG range shooting sees some inprovement in some loads shooting with less drift and drop?......down side-bullets more expensive..or buy kit to molly coat your own....DIRTY...gets on fingers and you have tighten up neck tention on bullet in case,boost powder charge? slight amount to get same fps....blue bbls MIGHT rust faster if not kept oiled? attracts moisture more? I use molly factory coated-bullets in 22 centerfire rounds only for my use....works well in my guns/loads....hth..good luck and good shooting!

The issue I had with shooting Moly coated bullets is....once you fire them in your rifle,you have to keep shooting moly coated bullets....that is, if you shoot moly,and then copper jcakets,and then molly,you are actually building layers in the gun barrel,and you can't get the copper out,because the molly is on top etc.....I had to use a lot of bore cleaner and Kroil,to get all of the molly out of my barrel,it took about 2 hours to get it to come clean ....also if you tumble just one molly coated bullet,your media is noe contaminated with the stuff and everything tumbled in that media,will have molly on it .....BB34

Some like Em some don't .

I don't !. I see NO advantages other than a slight cleaning advantage in .17 .22 caliber loads . Then in only some loads .

Far as accuracy goes , it's never been proven to me that they work any better than uncoated projectiles .

A shooting buddy jumped all over them MANY years ago loaded over 40 different calibers using Molly . A lot a little then barely any at all .

With the exception of his .17 he gave up on it . Didn't ever produce better or more accurate loads , just kept the .17 slightly less fouled .

He has K's of targets with accurate data as well as his note book all his loads were chronographed .

.17 -.375 and a lot of Military off the wall foreign caliber stuff . I tried a few calibers just to see for myself . I came to the conclusion it's more Hype than Fact !.

Shoot Straight Know Your Target . ...

Less cleaning between shots & abit higher vel. are possible. The downside is you pretty much have to shoot the moly coated, they cost more & require abit more powder to reach the same vel. as non moly.

Well worth the effort for me to use Moly, and will continue to use it until something better comes along.

But I can see where some folks would not like flatter shooting, longer barrel life, and easier Bore cleaning.

The only demonstrated advantage in using moly has been that you can go longer between cleanings, a slightly desirable thing in a match situation. Using moly paste is an alternative that will apply the moly more evenly throughout the barrel. If you are in a very dry climate, there is no likely downside to using moly other than added expense. If you are shooting in high (30% or more)_humidity on a regular basis, you might be taking a chance with accelerated throat erosion. When using moly in any form, you must clean the barrel perfectly before applying and also between applications.

You'll hear horror stories about how moly reacts with heat and products of combustion to form sulfuric acid, ruining you expensive shilen barrel after only a couple hundred rounds. I've seen some match barrels that were retired early after regular moly use. They had more than a couple hundred rounds through them and I was not there when the barrel was cleaned prior to applying the moly.

I shoot hard cast bullets up to 1200 fps.
I shoot Copper jacketed bullets up to 2600 fps.
I shoot Moly coated bullets up to 3600 fps.


'Cause I hate stopping to clean.

Moly coating causes more problems than it prevents. It is extremely hard to remove and if left in the barrel, attracts moisture.

Do yourself a big favor and avoid the headaches and hype; don't use moly coasted bullets.

Years ago we did a test on molly coated bullets. We shot several thousands rounds in the same rifle, half molly coated and half uncoated.

There was a slight velocity increase with molly coated bullets, with the same powder charge, as against non-coated bullets.

There was a slight accuracy improvement too.

I would not have gone through the trouble of molly coating bullets for the slight advantages mentoned above.

But, the greatest advantage is the enormous reduction of barrel fouling!

For that reason alone, we molly coat all the bullets we use ourselves.

We have not encountered any increase in corrosion with barrel that are used with molly coated bullets whatsoever.

And we live in a place where humidity is very high, and being close to the sea, salt content is high too.

W have two rifles, both are chambered for our own wildcat, the 375/404. We use molly coated bullets in both rifles.

Between 6-8 people use these two rifles to hunt in Africa every year. At the end of the hunt, we let our camp staff shoot all the ammo we have left in a competition.

Both rifles get fired so fast, the barrels get too hot to handle. We use a couple of towels soaked in water to cool the barrels between shoots - one rifle is being cooled while the other is being shot.

I would estimate these rifles must have had at least 3000 rounds through each, both are still shooting extremely well - 3/4 inches or less.

We never clean them on our hunt, even when it rains.

They get cleaned after we get home, and normally 10 patches would have the barrels very clean.

In the past, we used to spend an extraordinary time when we get home to get the rifle barrels clean.

I have spent literally weeks clean some barrels.

Of course, this can vary between one barrel and another.

But, in our experience, molly makes a very big difference to fouling.

thank you for replies
in many counteries buying a rifle or changing a rifle is a very difficult matter for the hunters. being able to prolonge the barrel life is very important and it seems that moly coat realy helps .
regards
yes

quote:

Originally posted by yes:
...being able to prolonge the barrel life is very important and it seems that moly coat realy helps ...

Hey yes, That is why I started using it. I had one particular rifle at that time which liked ANY Powder/Bullet combination I put in it and ended up shooting it a whole lot. I dreaded the day I would have to replace that specific barrel.

Then MOS2 became the point of a lot of discussion in Precision Shooing magazine. And they had articles explaining how to coat your own. There were still a few Tricks I had to figure out on my own, but it isn't as bad as some folks(who have never even tried it) would have a person believe.

Also back at that time Norma was running a Life Test on some kind of 6.5mm cartridge with Moly Coated Bullets. They did not mention the actual cartridge but said it was a "Hot 6.5mm". Norma had a running tally on a web site you could go to back then(years ago). The last time I looked at the tally it was somewhere around 9,000 shots with this comment "without an appreciable loss of accuracy".

And Mr. Walt Berger had a running tally in the Precision Shooing magazine, inside his Bullet ad, where he was keeping track of the number of shots through Mrs. Berger's BenchRest rifle. I believe it was up to(maybe) 4500-5000 shots the last time I saw his ad and he also included words to the effect - "without an appreciable loss of accuracy".

So, that is what got me interested. There are some tricks to getting it "Peened Into" the Jacket and there is a short learning curve, but for me it is worth it.
-----

I see the mention above of Sulfuric Acid and drawing moisture to the bore. I really tried to track that down at one time and found it was being championed by a web site who had a "product to sell". Plus, I've never had a problem with my rifles (like Saeed mentioned) due to corrosion. But, I do clean and lightly Lube the Bore every time mine are shot. The Lube apparently prevents the moisture from getting into the MOS2.

Of course, regular old copper left in a Bore(without cleaning) will also get moisture beneath it if the conditions are right and cause pitting. So, I've just not experienced that kind of a problem.

If someone actually has experienced a pitting problem using MOS2, tell us about it. And please mention if you had cleaned the Bore after every time you shot the rifle and then lightly Lubed the Bore.

Best of luck to you all.

Hi hot core
yes norma are moly coating their high end line of competition cartrdiges called DIAMOND LINE and they had a report showing that a gun had been fired with 10000 rounds moly coated bullets and still had a dood accuracy!!!. i dont know why standard hunting bullets are not moly coated? i have winchester supreme line with fail safe bullets 180 grain in 3006 and 270 grain in 375 H&H which are coated with a black coating which i guess it is moly coated,
regards
yes

Hey yes, Thanksfor the info about the count getting to 10k. Perhaps it was the same cartridge.

I believe some of the Bullet manufacturers do offer it on a few of their "high volume" sellers. like Sierra and Speer. And I believe Berger offers it across the board as an option on their Bullets. Maybe some others that I'm not aware of.

Best of luck to you.

IMHO,
In my 22-250, it made a substantial difference. I went from a 3" group to a 1" group at 300 yds using moly-coated bullets. I didn't chrono the rounds, however the barrel seemed to stay cooler. Also note that my gun doesn't shoot worth a snot with a clean barrel.This is just my experince and I can't speak for anyone else.

I don't remember when the moly boom began, but I believe that I began using moly bullets around that time. I was on the search for a good load for one of my rifles and found a good combo using some Hornady A-max Molys. A dozen years later, I continue to use these bullets as my go-to load in that particular rifle.

As for actual performance differences, I can say that moly coating absolutely reduces copper fouling. Literally no copper comes out of that barrel upon cleaning.

As to the issue of corrosion, I have seen no evidence that moly eats bores alive as some have claimed. No horror stories here. I do clean this rifle, and every other firearm I own for that matter, after a shooting session. Who among us would put our toys away dirty, especially a long-range rig built for accuracy?

I love hearing the various (BS) horror stories about moly

1)That it "builds up" in bores

2)that you can create a "layer cake" fouling of alternating layers of moly and jacket material

3)That moly promotes corrosion

4)That moly is in any way hydroscopic

Or that it causes Global warming, causes Al Gore to get fatter, causes Hillary to be a shrill bitch, that it causes Bill Clinton to be a smarmy scumbag etc...

Why do I like hearing these things?

Because they identify LIARS and the GULLIBLE

The WORST thing that moly does is makes it somewhere between difficult and impossible to tell when you've removed the powder fouling from the barrel, Much of which is actually unburned graphite.

Anyone who believes what they were told by some crusty old seargant in bootcamp that "the bore isn't clean until the patch is too" will absolutely HATE Moly.

Moly WILL bond to metal surfaces or more precisely INTO pores in the metal surfaces, HOWEVER It won't build up in a barrel beyond a certain point any more than cake icing can be built up on a busy set of railroad tracks.

It may sit in the cracks but the excess will be "squeeged"
off with each passing bullet.

Jacket fouling will not stick over a layer of moly any more than the wheels of a train will leave a layer of metal over the icing coated rails I mentioned above.

Granted I think a lot of the positive attributes of moly are exaggerated to some degree but the detractors who spout
negative comments about it are quite simply full of

Why do I like hearing stories about moly?

Sometimes I just need something to laugh about...

what Do I personally think about moly?

It might not help, but it certainly can't hurt.

I have never coated my own bullets with the stuff nor have I gone out of my way to buy moly coated bullets, but I have shot up a big box of moly coated Hornady V-Max (Got them in the bargain cave at Cabela's)

And it seems to be a moot point, because moly's
foaming-at-the-mouth detractors have won...
the Do-it-yourself moly coating kits have been discontinued and the moly coated bullets seem to be dwindling in the bullet makers catalogs

So unless you special order them or shop the bargain cave at cabela's like I did to get my supply in a few years time there probably won't be any moly coated bullets available.

AD

It can't hurt ?.
Only if your after accuracy !.

I along with several K's of shooters can prove the down side of moly to accuracy !.

Not velocity or ease of cleaning .

It wouldn't hurt the bore though .

Some people use Mica , Talc, some even use Titanium Dioxide , PTFE . I've seen just about everything under the sun used .

My AR15 dislikes the stuff as does my M1, A3 and 7 MM RM the .222 didn't care either way .

I never tried it in my 6.5's, 762.X's , .308's or .338's or .375 . I don't believe I will either .

Fact or Fiction ?. Kind of like those " Super Duper " oil additives for your engine !.
Some swear by them some swear at them .

I just try to refrain from swearing !.

They have never worked for me in either SS or Blued . That's just MY FACTS !.

Shoot Straight Know Your Target . ...

What's much more likely than your rifle not liking moly is not liking a particular bullet coated with moly.

While another bullet it doesn't like uncoated it would like when coated.

Unless you've done exhaustive testing you simply can't know which....

But it's just so EASY to blame the moly instead of the bullet or your barrel's dislike for a specific bullet

I did find that with moly I had to fiddle with the powder charge by a couple 1/10th of a grain to make the bullet perform as well as the uncoated bullet.

There was a difference positive or negative I refuse to say
because it really wasn't one or the other, all I can say is "different"

the only barrel I have that's been fed any moly bullets
is a less than discriminating barrel, I really haven't found anything lighter than 55gr it won't shoot

it seems to prefer lighter flatbase bullets driven to "max"

What it LOVES is the discontinued Barnes VLC 40gr.

I'm down to 187 of these....

AD

I know we have been around and around this before, but my memory fades fast.

So, wern't we told the barrel wears out from erosion in the throat area.
And does Moly stop/slow down heat errosion?
Isn't the placiebo effect worth about 40%

Apart from being lazy, I never tried Moly because if it was such an improvement, would I ever get the barrel coated just right to start with, would it keep just right after cleaning.
What effect solvents and oils would have on it.
IE, if it was so effective, was variations in its application affect performance.

Would it be a dirty pain in the butt.
Was'nt I already happy with my accurate rifles performance and barrel longitivity.
Wouldn't it be just one more variable to wonder about.
Well, I didn't answer my self, so did nothing.

I have used Moly in the past for my .223, and gave up on it. Never saw the benifits that others talked about (didn't speed cleaning any, but both my .223's have good barrels and don't foul very much), and the cost was higher.

So I pretty much have stopped using them because the other stuff works!