Rem 1100 bolt contact back of the reciver / Longer barrel = stronger recoil spring?

Nicolai84 · Jul 31, 2021

Hi guys!

I have a Remington 1100 12gauge ( Have not shot much, under 1000 rounds i think ), and have some questions i hope some of you can answer.

First:
The shotgun originally have a 22" barrel, but i shifted that to a 26" ( Same caliber, not a magnum barrel )

Do i need a stronger recoil spring, since a longer barrel will produce more gas pressure?

Is there any diffrence in Rem 1100 parts ( gas parts, recoil spring etc ) on models that come with a short VS a long barrel?

Second:

I can see, that there are some pretty deep marks on the back of the reciver, from the bolt slamming back. Is this common with the metal to metal contact? Hard to see in the pics, but the two lower corners have pretty deep marks.

Should there be a buffer in the reciver preventing metal to metal contact, or only the small plastic buffer on the back of the bolt?

I really appriciate if anyone can help me out

Nicolai84 · Jul 31, 2021

Also, i noticed it did not have that bearing plate thing between the stock and the reciver!? Is that normal?

Virginian · Aug 1, 2021

Do i need a stronger recoil spring, since a longer barrel will produce more gas pressure?
Only if someone has replaced or cut yours.
Is there any diffrence in Rem 1100 parts ( gas parts, recoil spring etc ) on models that come with a short VS a long barrel?
Not really, except Skeet barrels used to have larger gas ports. I don't know what they did different on the TAC4, if anything, and there are no longer any Remington parts lists to check.
Second:
I can see, that there are some pretty deep marks on the back of the receiver, from the bolt slamming back. Is this common with the metal to metal contact?
That is not good IF you are getting metal to metal contact. Looks to me like normal impact of the plastic buffer in the rear of the bolt, but I can't be positive, with that finish. You may have drilled out gas ports. Buffer "wear" looks normal.
Hard to see in the pics, but the two lower corners have pretty deep marks. Should there be a buffer in the receiver preventing metal to metal contact, or only the small plastic buffer on the back of the bolt? Only the buffer in the rear of the bolt.
Also, i noticed it did not have that bearing plate thing between the stock and the reciver!? Is that normal?
Yes. No stock plate with a synthetic stock.

eastbank · Aug 1, 2021

i would check the recoil spring and the gas holes(port-ports)in the barrel, it looks to me like its very over gased. my old 1100 in 12 ga 3" magnum duck that has shot tons of magnums and has no marks like that.

jmr40 · Aug 1, 2021

I'm not as familiar with the 1100 as the 11-87. But the 11-87's with barrels shorter than 26" were tuned to only work with heavier loads, not typical field loads. I'm guessing the damage was done with the shorter barrel since the 26" barrel is new.

You may have drilled out gas ports.

This seems plausible to me. Someone may have modified the short barrel to work with lighter loads and it is now over gassed with heavy loads.

Nicolai84 · Aug 1, 2021

Thanks for all the replys guys!
I got the gun brand new, so no other owners than me, and i have not done anything to the gasports. Gasports looks the same size on the two barrels. Is there anything i can do, besides replace the recoil spring? The recoil spring is VERY hard to find in Europe. I hope i can find a US dealer that have the extra strong wolff spring that are willing to sent to the EU.

entropy · Aug 1, 2021

Nicolai84 said:
The shotgun originally have a 22" barrel, but i shifted that to a 26" ( Same caliber, not a magnum barrel )

If they have the same number of gas ports, shouldn't matter.

Nicolai84 said:
Do i need a stronger recoil spring, since a longer barrel will produce more gas pressure?

A longer barrel will not build more gas pressure, as gas is tapped at the gas ports, which are in the same places on all 1100's. (Except the Special Field) Since it's a new gun, your recoil spring should be fine for quite some time. If the gun gets really wet, pull the stock and take the spring out and oil it and the tube. Many 1100 duck guns fail due to this not being done.

Nicolai84 said:
s there any diffrence in Rem 1100 parts ( gas parts, recoil spring etc ) on models that come with a short VS a long barrel?

No, except as Virginain notes, on Skeet barrels.

Nicolai84 said:
I can see, that there are some pretty deep marks on the back of the reciver, from the bolt slamming back. Is this common with the metal to metal contact? Hard to see in the pics, but the two lower corners have pretty deep marks.

Yes, its normal, the buffer keeps the bolt from cracking quicker than it would without one. You may also notice imprints of the locking block in the top of the receiver. Not uncommon either.

Nicolai84 said:
Should there be a buffer in the reciver preventing metal to metal contact, or only the small plastic buffer on the back of the bolt?

No. not needed. Just the buffer in the bolt is sufficient.

Nicolai84 · Aug 1, 2021

entropy said:
If they have the same number of gas ports, shouldn't matter.

A longer barrel will not build more gas pressure, as gas is tapped at the gas ports, which are in the same places on all 1100's. (Except the Special Field) Since it's a new gun, your recoil spring should be fine for quite some time. If the gun gets really wet, pull the stock and take the spring out and oil it and the tube. Many 1100 duck guns fail due to this not being done.

No, except as Virginain notes, on Skeet barrels.

Yes, its normal, the buffer keeps the bolt from cracking quicker than it would without one. You may also notice imprints of the locking block in the top of the receiver. Not uncommon either.

No. not needed. Just the buffer in the bolt is sufficient.

Thanks alot for the reply

I am kind of surpriced that its normal with the marks on back of the reciver from the bolt slamming back. I cant find any pictures of the same kind of marks when using google. Do you have a Rem1100 yourself? And if you do, do you just accept the metal to metal contact on back of the reciver, or have you done anything to prevent, or minimise it?

Thanks again

Virginian · Aug 1, 2021

I have had 15 1100s/11-87s personally, and have worked on I don't know how many more. I do not recognize that "finish", and it just looks like to me the marking is due to the buffer. Metal to metal contact is shiny on BOTH surfaces. Your buffer is still visibly proud of the bolt. All 1100 and 11-87 action springs in 12, 16 and 20 gauge, including 3" magnums, are the same part number. If your gun is that new, it's fine. It looks like paranoia to me.
In reference to some of the replys:
11-87 target barrels and deer barrels did not have the gas compensation system. 11-87 compensated barrels have larger gas ports because the reliefs bleed off excess gas.
1100 Special field barrels have the gas ports in exactly the same place as the regular barrels. I have seen 2 with larger, "skeet" sized gas ports. I do not know if they came that way or were changed. Target Contour and/or Sporting barrels also have the larger ports to accommodate mouse fart loads.
The buffer is to protect the receiver, not the bolt. My 1963 1100 buffer looked like yours, and I changed it about 1967. It quickly looked like that again. As of 2021 it is still soldiering along.

eastbank · Aug 1, 2021

the marks are NOT NORMAL and if left alone your reciever will be destroyed with use. take it back(if you can) to where you bought it and show them whats happening, if not a trip to a gun smith is in order.

Nicolai84 · Aug 2, 2021

Virginian said:
I have had 15 1100s/11-87s personally, and have worked on I don't know how many more. I do not recognize that "finish", and it just looks like to me the marking is due to the buffer. Metal to metal contact is shiny on BOTH surfaces. Your buffer is still visibly proud of the bolt. All 1100 and 11-87 action springs in 12, 16 and 20 gauge, including 3" magnums, are the same part number. If your gun is that new, it's fine. It looks like paranoia to me.
In reference to some of the replys:
11-87 target barrels and deer barrels did not have the gas compensation system. 11-87 compensated barrels have larger gas ports because the reliefs bleed off excess gas.
1100 Special field barrels have the gas ports in exactly the same place as the regular barrels. I have seen 2 with larger, "skeet" sized gas ports. I do not know if they came that way or were changed. Target Contour and/or Sporting barrels also have the larger ports to accommodate mouse fart loads.
The buffer is to protect the receiver, not the bolt. My 1963 1100 buffer looked like yours, and I changed it about 1967. It quickly looked like that again. As of 2021 it is still soldiering along.

Thanks alot for the answer, i really appriciate it

In the picture i have highlighted where the marks are deep, it really looks like the metal on the reciver have been banged in a little. Is that really normal?

entropy · Aug 4, 2021

I haven't worked on as many 1100's as Virginian, but I've worked on more than a few.
I pulled my 1100 Competition apart to show you that the wear you show is far from unique, though I suspect it is more common on newer 1100's than older ones. My 1100 has about 4000 rounds through it in the last 3 years; It would have been more, but I bought a Ljutic 2 years ago, and mostly shoot that.

Here's the back of the receiver;

Not the best pic, and the whole receiver is lighter colored, but you should be able to see the wear in the same place yours is.
And the buffer:

Same wear pattern as yours. I suspect the newer 1100's aren't up to the quality of the earlier ones, but you should be fine for many, many more rounds.

Rem 1100 bolt contact back of the reciver / Longer barrel = stronger recoil spring?

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