Sorry, couldn't resist with the title.

Anyway I have a 28" vent rib barrel. I'd like to cut it down to ~20" and clip on a pair of iron sights to the vent ribs for slug shooting. 

I'm assuming a pipe saw would do the job and some sandpaper could clean up any burrs.

Is it really that simple or I'm missing something?

It is really that simple, although the vent rib barrels might require a band saw.  It will take 2 minutes to cut and deburr the muzzle.  

People can do it, just depending on skill level.

I use Rose Action Sports for my shotgun barrel work. He did an awesome job with my Ithaca...





The line in the first picture is a reflection of the tail end of the Remington choke tube.

And post Robar...

I have a slow cut carbide chop saw (NOT abrasive) we use for steel work. Will cut thru structural 1/2" steel 2x4's like butter, and i bet itd work great for this. Its at my buddys place in Marlboro. Not sure where you're from but if you need help, hollah.

 

Unless you're capable of doing the job yourself you might find it only a little more expensive or even cheaper to just buy another barrel.

JMO

Nothing to it.  Clamp it in a vice between a couple of pieces of wood and saw carefully with a hacksaw.  Debur with a fine half-round file and you're good to go.

But...if you buy a a slug barrel, that makes your gun capable of double duty.

2 hours ago, GRIZ said:

Unless you're capable of doing the job yourself you might find it only a little more expensive or even cheaper to just buy another barrel.

JMO

Sell the barrel, use the cash for a new barrel.  

32 minutes ago, Ray Ray said:

Sell the barrel, use the cash for a new barrel.  

Another viable option.

5 hours ago, GRIZ said:

Unless you're capable of doing the job yourself you might find it only a little more expensive or even cheaper to just buy another barrel.

JMO

What kind of shotgun is it?  

Carbide grit blade is a good idea, can go nice and slow with a recip or jig saw.

 

Buying a new barrel for this probably wouldn't happen. It had its guts pumped with brake grease almost a decade ago and hasn't been cleaned once. That's the sort of life this thing lives. And i think it enjoy it. It doesn't get money spent on it LOL

17 minutes ago, mossburger said:

Carbide grit blade is a good idea, can go nice and slow with a recip or jig saw.

 

Buying a new barrel for this probably wouldn't happen. It had its guts pumped with brake grease almost a decade ago and hasn't been cleaned once. That's the sort of life this thing lives. And i think it enjoy it. It doesn't get money spent on it LOL

A beater?

2 hours ago, Old School said:

What kind of shotgun is it?  

Good point.  You may get almost enough or more selling the vr barrel to buy a new one if it's very rare or desirable.