Higher Capacity Extension Tubes?

[Kind of Blued]

I was quite suprised to find extension tubes in the range of 8-13, and I'm wondering if anybody has turned a 26-28" hunting shotgun into a (very) high capacity version.

As tacky as they are, I noticed these: http://www.dpmsinc.com/store/products/?prod=5274

While I understand three gun competition is fast paced, and probably has some regulations, would something like a Remington 11-87 XCS with a long extension tube operate reliably? A Saiga would make more sense, but this is the kind of shotgun I would like to have just because I can.

I Noticed one fellow here has a 870 that handles 10+1. I am wondering if anyone else has gone for the long extension tubes and can share any information.

 

[Zoogster]

The longer the magazine tub the greater chance the spring is going to eventualy bind on itself causing problems if it has enough give to allow it to be fully compressed over that entire length.

 

[mscott]

I have an 1100 with a 10+1 capacity using a Choate extension tube. It almost comes to the end of my 28" barrel, but has worked fine so far. There are different rules for various games and clubs, so you may want to do a little research in your area before you spend any money.

 

[oldgold]

Several years ago A guy gave my buddy two 8' lenghts of seamless tubing taht just happened to be the same I D as the mag tubes on 1100's. We made several extensions including one for his that held 24 rounds. [23+1]. It was a little ungainly since it stuck out nearly two feet past the end of the barrel.

I still have a 10+1 on my 1100.

Spring stock ordered from Brownells solved feeding problems.

 

[Guyon]

Think about weight. A long mag extension full of shells adds considerable weight-forward to the gun. If you're going to use it to hunt, it can take you a while to get that much weight swinging in the right direction.

 

[357wheelgunner]

Just learn to shoot, then even a 7 round magazine tube will seem rediculous....

I have a 7 round tube on my 20" 870s, but they never have more than 5 rounds in them. That way I don't have to worry about the spring going bad as quickly.

 

[The Deer Hunter]

I know those guys who do trick shooting use the high capacity mag. tubes so they can shoot 8 birds or whatever at a time.

Don't know much practical use besides that.

 

[Chris Rhines]

I would submit that most of the people competing in 3gun with Open shotguns don't need to learn how to shoot.

Anyhow, yes, Open-class practical shotguns usually have a 26-28" barrel and an 11-round magazine. Tube-fed shotguns take a long time to load, and any extra capacity helps over the course of a 15-20 round stage.

You have to use a longer mag spring (uncompressed length 10-12" longer than the mag tube is a good place to start), you really have to have a barrel clamp or two, and changing the mag spring every so often is a good idea. I change mine once a year or so.

One of the reasons that I like Nordic Components tubes so much is that the end of the tube has a threaded cap. You can remove this cap and pull the guts out of the magazine without removing the barrel clamps, thereby preserving your zero.

- Chris