New Mossberg 500 Mariner

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Today I purchased a new Mossberg Model 500 Mariner shotgun. Main use for this will be as a home defense gun. First, some background as to how I chose this piece.

After several years without firing a shotgun, last year I picked up a Stoeger Uplander 20 gauge double. Intended usage was sporting and home defense. After shooting it I liked it but decided I wanted a gun that ejected empty cases if I was going to rely on it for defense. Yes, I could learn to work with extractors but I want to eliminate ejection as one more factor to worry about if I have to use the gun to defend my home and family. One less thing to worry about.

Since I like double guns I looked around for a coach gun with ejectors. No dice. Since the target market for coach guns is CAS, and that requires extractors, all the new coach guns come with extractors. Phooey.

That left me looking at autos and pumps. I didn't want an auto. A pump will function with pretty much any ammo. There are reliable autos but I have more confidence in the reliability of a pump. YMMV.

Currently, there are two major pump guns on the market, the Remington 870 and the Mossberg 500/590. For me the Mossberg has one feature which makes it more desireable: the top mounted tang safety. I am left handed and the Remington's cross-bolt safety (unless I found a southpaw 870) works backwards. Yes, I can learn to work with one but why complicate matters, if a suitable alternative exists?

The Dick's Sporting Goods near me had a couple of suitable choices. The first that I looked at was a 20 gauge Mossberg 500 Super Bantam All Purpose Field. This is a blued gun with a 22" barrel, recoil pad, and removable stock spacer. I really liked the idea of the short length of pull. The Super Bantam fit me pretty well but it was light. Only 5-1/4 pounds according to Mossberg's web page. That would make a great gun for carrying but recoil with it is going to be stiff, even in 20 gauge.

Next up was a Mossberg 500 Mariner in 12 gauge with an 18.5" cylinder bore barrel with a bead. The metal has Mossberg's MarineCoat finish, which looks like electroless nickel (not sure if it's that or something more high speed). I like the idea of a finish which reduces the amount of maintenance I need to perform. It's not pretty like bluing but this is a tool. Also, the flat silver finish probably makes the gun look a bit bigger and scarier, which is a bonus if I ever need to unlimber it for defense. (I regard this as a bonus, not as something to be relied on.) Like the Super Bantam it came with black plastic furniture, though it lacks the removable spacer to adjust LOP. It does have a recoil pad. Weight is 7 pounds. It fit me pretty well, the price seemed reasonable at $369, so I decided to buy it.

Along with the gun I bought a 100 round value pack of Remington #8 target loads, just to get familiar with the gun. I'm going to pick up some reduced recoil buckshot and slugs for serious work. Aside from ammo, the only accessories this gun will get are a shell holder for the butt stock (already on though not shown in the pic below), a sling in QD swivels, for outside use, and a Mossberg Loc-Box so I can safely store it in my bedroom. I also picked up a 12 gauge Hoppe's BoreSnake.

Depending on how well I can shoot slugs in it, the Mariner might even see duty for deer hunting.

After getting it home I field stripped the Mossberg and lightly oiled it with Ballistol, and removed the plug so I can fill the 5 round mag. I BoreSnaked the barrel which showed signs of being proof fired and not cleaned thereafter.

My next step is to BA/UU/R.

Obligatory new gun pics:

Mossberg_right.jpg

Mossberg500A.jpg
 
I just ordered a Limbsaver recoil pad and a set of Uncle Mike's QD 1.25" sling swivels for the Mariner. The Limbsaver pad should work better to absorb recoil than the factory pad, which is kinda hard. The QD swivels will allow me to easily add a sling for outside use. I plan to use either a GI silent sling or a Brit surplus Lee-Enfield or L1A1 sling. I'm a big fan of the British slings as they are dirt simple and lightweight.

Also ordered some ammo: 25 rounds each of Federal low recoil Tru-Ball slugs and Winchester Ranger low recoil OO buckshot.

Now all I have to do is get the time to get to the range.
 
Just make sure...

I am not trying to rain on your parade at all but...

Make sure you shoot a lot of ammo before you "certify" your Mariner for home defense. Mine lost the extrator after 15 #6 rounds the first day I had it (Mossberg was very good at replacing it in a hurry) and then the second time I shot it the first two slugs (federal 2 3/4 powershocks) left the shell stuck in the barrel. Then later a #8 got stuck too. Had to take the barrel off to wiggle em out. I will keep mine in the closet and my .45 in the nightstand for now, that's for sure.

I still love my shotgun, even though she done me wrong... I am going to try to polish up the chamber real shiny-like and stop those shells from sticking. Oh and you're right about the recoil, 000 buck and those slugs were a bit, uh, brisk.
 
Mossbergs are great guns. My 500A has thousands of rounds through it with almost no problems. All issues that I have had with the gun have been ammo related.

I currently have it loaded with 2 3/4in Remington #4 buck. I used to buy into the 3in magnum hype, then I actually fired a few of them and it apparently knocked some sense into me.
 
Do you have a P.A.S.T Recoil Protection ?

Yup, have one of those. FYI, one can make a cheap, substitute for a PAST pad using an old mouse pad. Not as effective as a PAST, but it does help.
 
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