View Full Version : Remington 1100 barrel compatibility

August 06, 2014, 19:15
I have a standard Remington 1100 chambered for 2.75 inch shells, but recently,I came into possession of another barrel chambered for 3" magnum shells that someone cut down to 18". My question is: if I never have any intention of firing nothing but 2.75" shells, Will this barrel be safe to use on my standard 1100.I would like to find out before I waste range time on an idea that will not work.:confused:

August 07, 2014, 11:31
it may work as long as you never try to shoot 3" shells out of it
although there may not be clearance in the action for the barrel
extension to allow reassembling the shotgun

the bolt on your standard receiver does not travel far enough to allow the
3" shells to eject and possibly not even feed

Remington made a 26"- 3" chamber steel shot / 2-3/4" lead shot chamber
barrel that functions on a 3" Magnum receiver, this was added to my 1100
so that I could make proper use of interchangable choke tubes, and to my
delight . a Pattern Master tube, with that tube I made drop dead kill shots
on birds that friends could not even attempt w/ their 10 Gauges,
a few months ago I looked at the Patten Master web page and WOW !
they have all kinds of tubes now, and for good reason . steel shot has
been pushed to such speeds that my old Pattern Master tube cannot slow
down the wad to keep it from blowing a huge hole in the pattern and
shortening the shot string

I have three different barrels for my 1100, a 3" full choke 30" barrel that
came on it from the factory, the steel/lead I mentioned above, and a
Hastings 24" aftermarket w/ a 2-3/4" chamber thats safe for steel shot
that is set up for Hastings tubes

I have just dug the 1100 out of the safe where it had been retired to after
purchasing a Winchester Super-X2 a number of years back primarily for
waterfowl use, the 1100 will now have a new role to fulfill as home defense

The goodies that I have added are:

Daves Metal Works Easy Loader (http://www.midwayusa.com/product/786587/daves-metal-works-easyloader-extended-carrier-release-bar-remington-1100-12-gauge-steel-silver?cm_vc=ProductFinding)

2 shot magazine tube extension from Scattergun Technologies (http://www.midwayusa.com/product/370160/scattergun-technologies-magazine-tube-extension-remington-870-1100-11-87-12-gauge-2-round-parkerized?cm_vc=ProductFinding)

Tac Star mag extension tube clamp/support (http://www.midwayusa.com/product/643064/tacstar-barrel-to-magazine-clamp-mossberg-500-590-600-remington-1100-11-87-blue?cm_vc=ProductFinding)

Choate combat bolt handle (http://www.midwayusa.com/product/575180/choate-combat-bolt-handle-remington-1100-11-87-steel-blue?cm_vc=ProductFinding)

I already had a Side Saddle for it to have extra ammo right there ..
but if I was just starting with a side saddle I would probably go right to
the new style velcro mounting setup that allows a quick change

>>> THIS Forum Post on a 11-87 Project (http://www.shotgunworld.com/bbs/viewtopic.php?f=7&t=309034) <<< is what inspired me to bring my 1100 out
of the safe and give it a new lease on life

If you plan on using your 1100 / 11-87 extensively this tool is worth its
weight in gold when the shell latch decides to self release from its factory position
Baker Shell Latch Staking Tool Remington 870, 1100 (http://www.midwayusa.com/product/153792/baker-shell-latch-staking-tool-remington-870-1100)

August 07, 2014, 11:34
here is a excellent how to ...

INSTALL: Dave's Metal Works Easyloader - Remington 1100 12ga (http://www.vomschmidthaus.com/vsh_dmw_ezl.html)

August 07, 2014, 12:44
Does the shortened barrel have one or two gas orifices ?


August 07, 2014, 15:10
Does the shortened barrel have one or two gas orifices ?


It only has one gas port.

August 07, 2014, 17:49
many have chopped barrels down w/ 2 ports and they end up opening the two ports to 0.118" (each) to allow function with most loads

I do not know how far to open a single port to get a 18-1/2" barrel to function w/ full power loads, and not sure if you can achieve function with trap loads on a single port

keep in mind full power loads will be hard on the gun if you open a single port to a large opening suggest consulting a custom shop for help on a single port

make sure the gas piston & seal (outside of mag tube it rids on too) is clean & a fresh o-ring when you start testing opening the port size

don't forget to pull the shoulder stock and thoroughly clean the recoil spring & tube or all efforts will be in vain

August 08, 2014, 00:31
that would be 3mm or #32 drill bit?

August 08, 2014, 11:39
that would be 3mm or #32 drill bit?

#32 = 0.116"

0.1181" = 2.9997 mm

start w/ clearing any carbon deposits from the ports

just remember that opening up the ports will make it hard on the working parts w/ full power loads

you should start by barely taking any metal out and slowly work the hole out to where the preferred load works well, you may end up slightly over the starting size of the ports

August 09, 2014, 17:26
Does the shortened barrel have one or two gas orifices ?

It only has one gas port.

First remember this, Drilling out gas ports is easy, and easy to screw up.

OK, after doing some more research .

Remington has used three different size gas port holes on the 3" Magnum barrels w/ a single port hole

use the shanks of your number drills (from your number drill index) to try to gauge the actual hole size

now there are two ways to approach this problem:

1. Carefully use the next size larger number drill to open the port hole size (and deburr carefully),
reassemble the gun and test fire, if you can get it to function, great, if not open w/ the next size
larger number drill reassemble and test fire (and on and on ad-nasauem) until you get it to
function, now make sure it will fire at least 50 rounds (maybe 100) without any malfunctions

2. I read where a guy took his to Gander Mt years ago and they drilled a new gas port and tapped it
to accept a small allen set screw to allow cheap dove/trap loads and when you plan on using
the heavy loads you just put the set screw in and you are back to factory settings, not the ideal
setup but seemingly allows you to go back to stock

The problem when you chop down any barrel on any gas operated semi-auto is that you have now
changed the factory timing of the barrel gas port & action/bolt, more specifically the dwell time
(the time between the wad/bullet passing the gas port and exiting the barrel at the muzzle), thus
changing the duration, pressure and volume of gas acting on the seal & piston

this gem below gives some insight, and if it is correct .. tells me that gas ports really do not
need to be opened up that much to to affect function

I contacted Remington and asked about the gas port sizes. The 12 gauge 28"vr smooth
bore barrel has the same size gas ports as their 12 gauge 22" vr smooth bore police barrel.
So if I stick close to that size I should be good..