I just purchased a Smith & Wesson Model 1000 Semi Auto 12 gauge shotgun which is chambered in 2 3/4. Is there a 3 inch chambered barrel that will work with this shotgun?

Not recommended, the 3 inch guns have a steel receiver versus the lightweight alloy receiver of the 2 3/4 inch guns.

Quote from the 1981 S&W catalog "Barrels chambered for 3" magnum loads may not be used on the 2 3/4" Model 1000 receiver."

Owners manual can be downloaded here: Model 3000 & 1000 Shotgun, 1500 & 1700 Rifle Manuals

KO

I could not find that statement in the manual.
Where is it stated regarding the 3" chamber barrel?
Not trying to argue but was looking at the manual and not see it.

My 3000 pump can shoot 3” shells. I’ve never seen a 1000 auto.

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213th FBINA

I did find that stated here.

S&W Model 1000 Auto Loading Shotguns | Bangor Punta Archives

I have the S&W 1000P 12 gauge (pump) with IMP Cylinder that is chambered in 3".
The S&W 1000 12 gauge (Auto) is MOD Cylinder and chambered in 2 3/4".

As I stated in my post: Quote from the 1981 S&W catalog ........

I did not see it in the Owner Manuals either.

Congrats on your purchase, the S&W 1000 is a nice shotgun.
The only problem I've had with any of mine is that the original Piston Shock Absorber Piston Shock Absorber, 12 Ga., New Reproduction | Gun Parts Corp. may turn to goo and gum up the works.

KO

Most of the "civilian" Model 1000P/3000 pump shotguns came with 3" chamber barrels, all the "police" pump shotguns came with 2 3/4" chamber barrels.

The Model 1000P was renamed 3000 in 1981 to avoid confusion with the Model 1000 autoloader.

Here is what was available for autoloading shotguns from S&W in 1984, the last year they were marketed by S&W.



KO

Interesting, My S&W 1000P, "I was told by S&W when I inquired" was manufactured in 1983. How do you confirm without paying $100 per gun find our basic data on your guns?

1000 was made by Howa of Japan and marketed under S&W brand.

As a general reference receivers on shotguns with 2 3/4" chambers won't function with 3" shells. That's the case with a Rem 1100 and I don't think S&W 1000 is any different. The 2 3/4" chamber should be marked on your barrel. That would indicate, to me anyway, that the receiver was designed for 2 3/4" shells.

They still make 2 3/4" shells so why would you want to drive a square peg into a round hole? But if you insist....

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That's just somebody talkin.

Just looked at mine. Alloy receiver and the finish is scratching off near the bottom where the shell rim hits the loading tube area but wow, I forgot how nice the finish is on the stock and forearm.

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Shield 45, SW40VE, 586, 1000

I research old catalogs and advertisements to come to a conclusion that is close enough, for me anyway.

1000P introduced in 1980 and renamed to 3000 in 1981 S&W 1000P manual

KO

I have a Rem 1100 and not that they are the same gun (despite a striking resemblance), but the thing they share in common is having a regular receiver for 2.75" and a magnum receiver for 3". The last letter on my serial is "v" noting a regular receiver and the barrel I have is chambered for 2.75".

Long story short, you may want to research your serial more to see if you have a 2.75" barrel on a 3" receiver or a 2.75" barrel on a 2.75" receiver.

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aka "Mooncat"

KO41 -- Thank you for your assistance
So, my S&W 1000P would have been manufactured in 1980 - 1981./
How does one get access to the catalogs you refer to?
This site has information but not a catalog that I could down load.
S&W Model 1000 Auto Loading Shotguns | Bangor Punta Archives

It's very easy to tell a 3" receiver from a 2 3/4" on the S&W 1000 series.
The 3" magnum is blued steel receiver and is marked Smith & Wesson Model 1000M. The standard 2 3/4" receiver is a black finished aluminum alloy marked Smith & Wesson Model 1000.
There are a couple outliers though, the 12ga and 20ga slug guns have a 2 3/4" steel receiver and the buttstock also has a recoil pad like the 3" Magnum guns.

KO

I picked mine up from the local gun stores, gun shows and eBay.

KO

Here are the rest of the S&W sporting shotguns for 1984.



The 1984 order numbers for the ones I own are:
Autoloader
213030
213070
211060
211080
216000
214600

Pump
233060
243000
235000

Target
211000
212000

KO

I don't think the factory would put a 2.75" barrel on a 3" receiver for obvious safety issues. 3" shells don't work real well in 2.75" barrels. Although it may be possible to get a 3" shell into a 2.75" chamber, 0.25 inches of that shell is going to be in the forcing cone. That will cause excessive pressure in the chamber and that is never a good thing.

I used to load 2.5" shells for a British double. I cut the hulls down so the finished shell was 2.5". I had to use a roll crimp over a card and seal with paraffin. Old factory ammo was made that way before the star crimp came along.

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That's just somebody talkin.

I think there is a misunderstanding here, nobody was talking about using 3" shells in a 2.75" chamber barrel. Using a 2.75" chambered barrel on a 3" Magnum (Model 1000M) receiver is perfectly fine. S&W states that the 3" chambered barrels are for the Magnum (1000M) models only.

KO

Okay, I checked the barrel extensions on both 20ga and 12ga 2.75" and 3" barrels. The 3" barrels have a protrusion on them that do not allow them to be installed on a 2.75" receiver.



KO

Yes the model 1000M and the one I have is the 1000 Super12. Superb shotgun. Took out thr duck plug, replaced the rubber o ring or shock buffer, and cleaned the gunk out of it and it will shoot any 2 3/4" or any 3" magnums

Welcome to the forum.

The Model 1000 Super 12 is a fine shotgun that can fire light 2 3/4" loads and heavy 3" Magnum loads without making any changes to the gun. Only Super 12 barrels fit and can be used on the Super 12, they do not fit any other Model 1000 series shotgun.

The 1000M can use 2 3/4" or 3" chamber barrels. For the 1000M to work reliably with 2 3/4" shells it is recommended to use a 2 3/4" chambered barrel. Model 1000 barrels chambered for 3" shells only fit the Model 1000M receivers.

KO

Anyone have a year reference on serial numbers? FC14927