2-3/4" receiver & 3" barrel chamber


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iyn
April 19, 2013, 05:58 PM
I'm having trouble finding buck shot in 2-3/4" in my area, but the shops do have buck shot in 3" chambering. I have a remington 870 with a 2-3/4" receiver with 3" chamber barrel . I want to know if can I shoot 3" buck shot safely and will it cycle reliably?

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Mobuck
April 19, 2013, 06:25 PM
Probably not. The ejector is different for 3" shells.

dak0ta
April 19, 2013, 06:25 PM
It will fire, reliable ejection maybe. Mine is a 2 3/4'' receiver and it ejects 3'' shells even though the ejector is staked for 2 3/4''. Try it out.

Virginian
April 19, 2013, 07:29 PM
Try it and see. A lot of the old 2-3/4" receivers got out the door with 3" ejector and ejector springs in them. If it doesn't eject cleanly, the swap to a 3" set up isn't all that difficult if you DON'T go by the factory's recommendation to replace both, and the rivets, and refinish the receiver.

Fred Fuller
April 20, 2013, 05:27 PM
Shoot safely, yes.

Cycle reliably, not unless the receiver either got the ejector for 3" shells installed at the factory (and some did, I am told) or had it replaced with a 3" ejector later. Either way, the ejection port is the correct length for 3" shells, only the ejector might be different, and if it's set up for 2.75" shells the fired hull will want to hang up on the front of the ejection port.

Try and see if it will eject a fired 3" hull, if you can scrounge one somewhere....

NCsmitty
April 20, 2013, 06:26 PM
If you experience port interference with the 3" shells ejection, I believe that you can dremel grind more clearance on the ejector to alleviate the interference. You'll need to push and hold the spring out of the way when grinding. It shouldn't take much if you even need to do it.


NCsmitty

oneounceload
April 20, 2013, 07:51 PM
Shoot safely? Not really as you are increasing pressures and if you are shooting really hot loads to begin with, you are risking going over pressure, and also risking a kaboom

rcmodel
April 20, 2013, 08:05 PM
Not really, not really.

3" shells are loaded to no higher pressure then 2 3/4" shells.
11,500 PSI. (3 1/2" are loaded to 14,000 PSI)

So, it you have a 3" chambered barrel, and a long enough ejection port to eject the empties, and a 3" ejector in the receiver??

There will be no pressure problems or other problems with shooting 3" shells in a 2 3/4" 870.

The action & bolt are no different in strength on a 3" chambered gun.

rc

Black Knight
April 21, 2013, 12:11 AM
I have a Wingmaster with the type of set up; 2 3/4" receiver and 3" chambered barrel. After I got it I called Remington to run the serial number for a manufactured date and they told me under no circumstance use 3" shells in a 2 3/4" receiver. They said it may not cause any problems but may not eject.

Virginian
April 21, 2013, 06:44 AM
Do not bet any real heavy money on what Remington tell you on the phone. They do still have some real experts. Most of them do not answer the phones.

Carl N. Brown
April 21, 2013, 07:13 AM
Shoot safely? Not really as you are increasing pressures and if you are shooting really hot loads to begin with, you are risking going over pressure, and also risking a kaboom

OP is about using a Remington 2 3/4" receiver with a 3" chambered barrel.

3" shell in a 2 3/4" chamber is what you are thinking of. In that situation you are right. Never shoot 3" shells in a 2 3/4"; you can stress the gun beyond designed safety limits at most, and at least wear it out before its time.

2 3/4" and 3" shells may give the same pressure in appropriate barrels, but in the case of a 3" shell in a 2 3/4" barrel the 1/4" diff in the shell may unfold into the forcing cone of the barrel in front of the chamber, restricting the shot column (shot and wad) exiting the shell and entering the barrel. That can drive pressure up.

Using a 3" chambered barrel on a receiver set up for 2 3/4" is largely a matter of reliable function than safety: will the magazine and action feed 3" and will the action eject 3". Me, I love excuses to go to the range.

bigdaa
April 21, 2013, 10:31 AM
Tough call for Hawaii. If you want to pay a buck twenty per plus shipping, check out PSA tomorrow and see what Hawaii shipping might be. Here is the stuff. Steep? Yes. Available, Yes:



For me, It's a no go. I have both 2 3/4 and 3" receivers. I won't fire 3's in my 2 3/4 I guess maybe I am a prude or just old........
http://palmettostatearmory.com/index.php/ammunition/shotgun-ammunition/12-gauge/winchester-military-grade-buck-shot-5rd.html

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