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Posted: 7/4/2006 12:09:41 PM EDT
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I plan on trying some BH ammo soon. I noticed they have moly coated and "regular" bullets. Any reason to stay away from moly? Any reason in particular to use it? Jim |
It'll give your barrel syphillas. Or was it gonahrea? I don't know. I've shot them before. My colt A2 actually seems to prefer ammo with it on. But there are all kinds of theory's floating around about how it'll keep moisture in and other things. I don't really know. All I know is that when I shot bullets with them on, it did actually seem to help. But I didn't have non moly of the same type of ammo. All I noticed was with that type of ammo (hornady match 75 grainers) is that they shot well. I don't know if they would've shot better without moly. Sorry, that's all I got. If you read black hills website, the owner has a little write up about the benefits of it. He seems to like them. Some say you shouldn't mix between non moly and moly bullets. Again, I don't really know. |
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Moly is hygroscopic , so if your shooting it in a non-chrome lined barrel it should be cleaned before you store the weapon , or at least run an oil patch down the bore . Then there are those who say if you shoot a Moly bullet , then a copper jacket . It will trap the moly under a layer of copper which will then absorb water and can cause pitting . Personally I don't believe the copper over moly thing , because the moly is so slippery I doubt the copper would stick to it 
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There is no benefit using moly unless you fully understand how moly theoretically should be applied. This includes treating the bore and ammo. The idea is that in a shooting session of a large round count... you can shoot more with less degradation in accuracy versus standard copper jacketed use. In general, if you dont know...... dont shoot moly. |
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FA, I am a little familiar with moly bullets and the idea behind them. What I don't know is what the moly might do to a gas system. Since it also lowers pressure due to the lower friction I don't know if it would affect the operation of the gas system, or even clog it up. If there isn't a clear, definate advantage to using moly bullets I'll pass on the extra cost. I was asking because Cabela's has some Black Hills 69gr ammo both with and without moly, and I need to buy one or the other soon. Thanks, Jim |
may want to ask this in the competition/accurate AR forum,(probably go 3+ pages!) however i have used it for about 5-6 years, and it hasn't hurt the rifle (or gas system) in any way, using sierra 69 and 75gr match kings that I molyed at home, HTH, YMMV |
There is zero impact to the gas system or function of the rifle. The clear, definate advantage is more rounds before fouling degrades accuracy, and a simplified cleaning procedure. There is some info about moly and moly cleaning procedures on the zediker website. www.zediker.com/articles/articles.html Scroll down. |
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Thanks for asking the question. I just bought a couple of boxes of BH 52 grain OTM with Moly and was wondering the same thing. I would have preffered bare jacket, but moly was all they had. I might just wait until I complete the DMR build I'm about to start before I shoot it. -K |
It's the stock Colt HBAR 20" barrel. Since I can find no compelling reason to justify the moly bullets at this stage of my shooting, in this rifle, I will stick to non-moly bullets. A Sierra Match King HPBT should do fine all by itself. Jim |
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All moly does for you is increase the interval between accuracy degradation due to fouling. It can have several pitfalls if loading your own. The most noticeable comes from the reduced pull pressure required due to the decreased friction at the case neck. This will often result in vertical stringing unless one increases neck tension when reloading (of course this can cause unsafe pressures if the same set up is used with non coated bullets.). There will still be copper deposited in your bore but when viewed you'll see a layer effect moly- copper- moly-copper - etc. Having shots LOTS of service rifle using both coated and un coated rounds, the only benefit is longer intervals between cleaning - cleaning only when accuracy degrades. Generally it more of a PITA than the benefits derived for most recreational shooters. Also not that lots of great service rifle shooters have abandoned molycoated bullets While its reported that you cant mix and match coated and non coated bullets without cleaning, I really have found little to no effect having done it. Others report different results. If you shoot moly and dont want to scrub it out of your barrel, you need to clean with kroil and a mild abrasive like Remy's bore cleaner (great stuff) or JB's paste. I do find its easier to clean barrels that have been fired exclusively with moly. It takes me about 10 minutes and I finish with one pass of a dry patch (ie there is still some kroil left in the bore) and Ive never had a problem with corrosion. Unless youre really looking for screaming small groups over lots of rounds, save your $. Its one more variable that for all but the seasoned reloader induces changes with little benefit. One can shoot just as well with non coated bullets, having spent a lot less time dicking around with loads, even with spending a bit more time cleaning. In a factory barrel its probably really a waste of time. Hope that helps... |
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