Mossberg 500 issuei

G

Glocker89

New member
I was out shooting my 12g moss500 and a few of my cheap Remington game loads that come in the 25 box for like $6 didn't fire. I reloaded them and then they would fire. It was also very cold outside while I was shooting. Like 36 deg outside. I was out there maybe 30-45 mins before they did this. Also I look at the shell when it didn't fire and the bottom of the shell where the firing pin hits didn't have the little dent like it does after you fire one.... Could someone please help me figure out what the problem was.. Gun or ammo? If it's the gun what can I do to fix it? Thank you
 
Light pin strikes is usually a dirty action. I bet a field strip and clean with attention paid to cleaning and oiling the firing pin in the bolt.

Brent
 
Aerosol cleaner sprayed sparingly into the trigger group assembly and shake out the goop several times until clean. Then a light mist of aerosol OIL not wd-40 into the TGA and it should be good. Make sure the trigger is not pulled during cleaning... it can be reset but I heard something can break or be damaged by dropping the hammer out of the gun.

DO NOT ATTEMPT TEAR DOWN OF TRIGGER GROUP UNLESS YOU ARE A QUALIFIED SMITH OR A WATCH MAKER.
Brent
 
If there were light primer strikes or no visible strikes at all and the temperature was in the cooler region, it indicates that the firing pin can't strike hard enough to set off the primer. This can be a problem with guns that are excessively oiled or lubricated with too viscous of an oil and then subjected to cold temperatures.

Think of the oil in your car. When its cold outside, the oil thickens and the engine has to crank harder on starting to compensate for the viscous oil. Its the same with your firing pin. If its oily, and its cold outside, and the oil gets thick and sticky, the firing pin will be sluggish because the firing pin spring has to overcome the thick sticky oil.

Here in northern Wisconsin we know about cold. 36 to us is a nice spring or fall temperature to be enjoyed in a sweatshirt and a baseball cap. When it gets really cold, like -20, your car doesn't always start.

Many folks up here are careful to not get oil in the firing pin of their guns, or if they do, they take the gun apart before winter and soak the bolt in lacquer thinner to dissolve any oil that's in the inner mechanism. Too many people here have lost a good shot at a deer because of a sticky firing pin in the cold weather and they've learned to keep the firing pin dry, or lubricated with a VERY light or dry lubricant.

I personally don't worry about an oily firing pin in the summer months, but come the cold season I soak all my bolts in lacquer thinner, and then apply just the thinnest of coats of Rem oil or similar light lubricant. It keeps the firing pin striking fast and hard when the weather's cold.

Hope that helps.
 
To Bluehighway

That sounds like good advice to us "Southern Boys." We don't usually have to fight the cold like you guys.
 
Disassemble and remove bolt. Degrease (I like automotive breakleen for this)
Lightly coat with Rem-oil or other SILICONE based product and you'll probably be good to go. The problem w/petroleun based products is that once the petro base evaporates all you have is sticky goo.
 
mossbergs don't like cold weather
Click to expand...

Not sure that you can really blame the brand. I've got a 930 spx that runs fine in the cold. I clean it after each use (just habit) and lube with breakfree CLP. I normally run decent shells through it, but sometimes try cheap stuff that someone gave me. No issues to speak of.

/*tom*/
 
A new firearm is coated with a presertive when it leaves the factory. If you don't remove (clean off) the presertive before you take it into the cold this is just what happens. I have seen this happen alot with Rem 1100's during deer season in NY. What happens is that the person was using the gun during the summer shooting trap when it started to fail to eject. (DIRTY GUN) So.. they just loaded the action up with an aersol ( wd-40 or 3 in 1) and hey it worked great. FF to late November, it's 15 degrees, big ass buck in the cross hairs and when he squeezes there is this thunderous " click ". Petroleum evaporated and here is the sticky goo. Solution... see above post!
 
i don't know whay made it not shhoot but it was a model500. they were pheasent hunting and I imagine he would be usig good quality stuff
 
I use a mossberg 500 and 590A1 at work in Vermont. I am also a Mossberg armorer (which just means I am certified by the company to do what most of the shotgunners know how to do anyway). I have seen very few failures to fire with the guns in service and those were all traced to the dirt/oil in the firing pin channel mentioned above. I also shoot mine throughout the winter, down to well into the minus degrees and haven't had a problem...I practice with the Federal bulk packs from walmart or if they aren't available, the remington bulk packs. Gotta chuckle though, about 36 being considered cold by some....no offence meant, I start to sweat when it gets over 65 degrees and couldn't survive without A/C.
 
Something else....if your gun suffers from a headspace problem, it might affect the firing pin contact with the primer....I have not seen this happen though, even with older guns.....check to make sure you have the barrel nut tight, as they do tend to loosen a bit after some firing. If it has loosened it may affect headspace.
 
It ain't a problem with the Mossberg, it ain't a problem with the ammo and it ain't a problem with the cold. How do I know? 5 days ago I fired 3 rounds of trap with a Mossberg 500 in 15 degrees with the dirt cheapest ammo I could fine without a single misfire, hangfire, light strike, etc.

Get the oil out of your bolt. Simple as that. It's gumming up in the cold.

Edit: to anyone who wants to talk weather extremes. Try living in Illinois. We got sub-zero winters and hyper-100 summers. Not the entire season, but we get good streaks of those extremes. Plus, we have ultra-restrictive gun laws! I guess it comes with the weather. :barf:
 
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