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Q:
Remington 870 Express vs. Express Magnum. I have an older Remington 870 Express. The barrel indicates to shoot "2 3/4 or 3" in three inch chambers use 2 3/4" in all others" My question is what is my chamber. It says 870 Express and does not say Magnum however it was manufactured before they started stamping them "Magnum". Is there any way to know if I can shoot "3 inch" shells in my gun safely? The gun will chamber a 3 inch shell but I have not fired one out of it for fear of unjury/damage. I got the gun used from a guy several years ago so I have none of the orginal paperwork. Any help would be appreciated.

Question by SRT Guy. Uploaded on November 13, 2009

Answers (11)

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from DakotaMan wrote 2 years 12 weeks ago

If the barrel is stamped "2 3/4 or 3" you can shoot 3" shells in it.

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from jestr1 wrote 2 years 12 weeks ago

I had a 870 express mag. It was chambered to take up to 3 1/2s Great for geese. If its not marked it was made prior to the magnum revolution. I would contact remington and ask if the chambering is capable of the use before firing it. They should be able to tell you by the serial #

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from Jere Smith wrote 2 years 12 weeks ago

It is clearly marked on the Barrel which shells may be fired in it. All my gun barrells tell which you can use if its a 2 3/4 Chamber it will say 2 3/4 shells ONLY if if it has a 3" Chanber it will say you can shoot either.

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from Jim in Mo wrote 2 years 12 weeks ago

Don't worry about the 'magnum' crap. If it says 2 3/4 or 3 inch your fine. Just don't shoot 3 1/2 inch shells in it unless it says so. You don't need them anyway.

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from jordjohn44 wrote 2 years 12 weeks ago

If the barrel says you can shoot 3 inch like it does, you can. I'm pretty sure that all the 870 express' have the 2 3/4 or 3 shot capability

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from Ontario Honker ... wrote 2 years 12 weeks ago

I have a Remington 870 Express I bought used in 1969. Been shooting 3" shells ever since. The "magnum revolution" predated my gun by several years (some Model 12 Winchesters were manufactured in 3" and I think they stopped manufacturing them in 1964). Yes, your gun will shoot 3" mags okay. Be careful if it's full choke (and I'm sure it is) and you're shooting steel. Go with the lighter, faster loads and nothing larger than BB shot. The older barrels had the choke squeezed into the last little bit at the end. Steel shot doesn't give like lead and that much pressure all of a sudden could cause problems. Anyway, you're wasting your money if you shoot the heavy magnum loads in steel. They're too slow and don't penetrate worth beans.

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from Jere Smith wrote 2 years 12 weeks ago

Will, you may get away with it in a SxS or O/U, but its not at all wise in them or Automatics or Pumps and too slow for a 2nd shot if you have to manually cycle them.

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from DakotaMan wrote 2 years 11 weeks ago

Will, it is very dangerous to shoot a 3" shell in a 2 3/4 chamber. The shell will fit in the chamber and it will go bang when you pull the trigger alright... just think about it though... the longer case will extend up into the barrel beyond the chamber making the barrel smaller in diameter at that point. This raises pressure considerably beyond what it would be in a 3" chamber. Some guns might just explode with this seriously increased pressure. Nothing ruins a good duck hunt more than getting your face blown off.

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from Bigeasttx wrote 2 years 10 weeks ago

Jim in Mo is right own about not worrying about the magnum crap. You are buying into a BS line 12 gauge guns were designed for 1 1/4 ounce of shot if you feel you need a bigger gun buy one not a bigger shell.
You are trying to cram 10 pounds of shot out a five pound hole resulting in blown patterns and more crippled game. It is about patterning your shotgun.
Shooting a shotgun is about pattern not about load as all the shells are balistacally the same.

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from Winchester 92 wrote 2 years 8 weeks ago

Now im confused... i have an old 870 express magnum that doesnt specify on the receiver. is magnum 3.5 inch or is that super mag... sorry for being a little slow haha

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from jasper5000 wrote 2 years 8 weeks ago

no magnum does not mean 3.5 in or super mag. magnum it self means nothing its just to make you think it has more power its for marketing not shell size because there is 2-3/4" 3" 3.5"magnum shells the only thing that maters is chamber lenth and what the barrel says on it. not the receiver. as far as a 870 goes there all the same weather it says magnum or not its the same receiver you can take any 870 put a 3" barrel on it and shoot 3" shells in it same goes for the 1100 auto to in 12ga. as far as it saying 2-3/4 or 3" in magnum receivers or 2-3/4" in all other receivers is because they dont want to get sued in court if your gun blows up from shooting the wrong size shells in the wrong size chambered barrel.the same goes for the 3.5" 870 super mag any 870 barrel will fit on it and shoot but only the size shells marked on the barrel not the receiver

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from DakotaMan wrote 2 years 12 weeks ago

If the barrel is stamped "2 3/4 or 3" you can shoot 3" shells in it.

+4 Good Comment? | | Report
from jestr1 wrote 2 years 12 weeks ago

I had a 870 express mag. It was chambered to take up to 3 1/2s Great for geese. If its not marked it was made prior to the magnum revolution. I would contact remington and ask if the chambering is capable of the use before firing it. They should be able to tell you by the serial #

+2 Good Comment? | | Report
from Jim in Mo wrote 2 years 12 weeks ago

Don't worry about the 'magnum' crap. If it says 2 3/4 or 3 inch your fine. Just don't shoot 3 1/2 inch shells in it unless it says so. You don't need them anyway.

+2 Good Comment? | | Report
from Ontario Honker ... wrote 2 years 12 weeks ago

I have a Remington 870 Express I bought used in 1969. Been shooting 3" shells ever since. The "magnum revolution" predated my gun by several years (some Model 12 Winchesters were manufactured in 3" and I think they stopped manufacturing them in 1964). Yes, your gun will shoot 3" mags okay. Be careful if it's full choke (and I'm sure it is) and you're shooting steel. Go with the lighter, faster loads and nothing larger than BB shot. The older barrels had the choke squeezed into the last little bit at the end. Steel shot doesn't give like lead and that much pressure all of a sudden could cause problems. Anyway, you're wasting your money if you shoot the heavy magnum loads in steel. They're too slow and don't penetrate worth beans.

+1 Good Comment? | | Report
from Winchester 92 wrote 2 years 8 weeks ago

Now im confused... i have an old 870 express magnum that doesnt specify on the receiver. is magnum 3.5 inch or is that super mag... sorry for being a little slow haha

+1 Good Comment? | | Report
from jasper5000 wrote 2 years 8 weeks ago

no magnum does not mean 3.5 in or super mag. magnum it self means nothing its just to make you think it has more power its for marketing not shell size because there is 2-3/4" 3" 3.5"magnum shells the only thing that maters is chamber lenth and what the barrel says on it. not the receiver. as far as a 870 goes there all the same weather it says magnum or not its the same receiver you can take any 870 put a 3" barrel on it and shoot 3" shells in it same goes for the 1100 auto to in 12ga. as far as it saying 2-3/4 or 3" in magnum receivers or 2-3/4" in all other receivers is because they dont want to get sued in court if your gun blows up from shooting the wrong size shells in the wrong size chambered barrel.the same goes for the 3.5" 870 super mag any 870 barrel will fit on it and shoot but only the size shells marked on the barrel not the receiver

+1 Good Comment? | | Report
from Jere Smith wrote 2 years 12 weeks ago

It is clearly marked on the Barrel which shells may be fired in it. All my gun barrells tell which you can use if its a 2 3/4 Chamber it will say 2 3/4 shells ONLY if if it has a 3" Chanber it will say you can shoot either.

0 Good Comment? | | Report
from jordjohn44 wrote 2 years 12 weeks ago

If the barrel says you can shoot 3 inch like it does, you can. I'm pretty sure that all the 870 express' have the 2 3/4 or 3 shot capability

0 Good Comment? | | Report
from DakotaMan wrote 2 years 11 weeks ago

Will, it is very dangerous to shoot a 3" shell in a 2 3/4 chamber. The shell will fit in the chamber and it will go bang when you pull the trigger alright... just think about it though... the longer case will extend up into the barrel beyond the chamber making the barrel smaller in diameter at that point. This raises pressure considerably beyond what it would be in a 3" chamber. Some guns might just explode with this seriously increased pressure. Nothing ruins a good duck hunt more than getting your face blown off.

0 Good Comment? | | Report
from Jere Smith wrote 2 years 12 weeks ago

Will, you may get away with it in a SxS or O/U, but its not at all wise in them or Automatics or Pumps and too slow for a 2nd shot if you have to manually cycle them.

-2 Good Comment? | | Report
from Bigeasttx wrote 2 years 10 weeks ago

Jim in Mo is right own about not worrying about the magnum crap. You are buying into a BS line 12 gauge guns were designed for 1 1/4 ounce of shot if you feel you need a bigger gun buy one not a bigger shell.
You are trying to cram 10 pounds of shot out a five pound hole resulting in blown patterns and more crippled game. It is about patterning your shotgun.
Shooting a shotgun is about pattern not about load as all the shells are balistacally the same.

-2 Good Comment? | | Report

Post an Answer

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