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Jul 28th, 2025
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Joined: Oct 2006
Posts: 5
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OP
Junior Member
Joined: Oct 2006
Posts: 5 |
Gentlemen I have been lurking here for a while great info and advise. By accident had a 28 shell in a 20. (Stupid I know)  Good thing gun survived no injurys . Can see a ring at the front of the chamber inside no apparent bulge outside. Scrap the barrel What say you thanks Dave
Dave
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Joined: Mar 2002
Posts: 7,893 Likes: 651
Sidelock
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Sidelock
Joined: Mar 2002
Posts: 7,893 Likes: 651 |
Have it looked at by a barrel smith like Mike O.
What type of gun are we talking about? If it were a clunker I would be a lot more inclined to scrap the gun than I would be if it was a very valuable gun. Might not make sense to some but clunkers are a dime a dozen an the metal in some of them is not that great.
At Remington one day I watched them try to blow up a 1100 12 ga. by putting a 20 in the bore and shooting it. They did it three times and there was no visible damage to the gun. Then they put about 1/2-1" mud in the end of the bore and it blew the barrel when shot. They claimed that while a shell in the bore might result in a major failure that the blocked end of the barrel with mud, dirt or snow would always result in one. I suspect that the metal near the chamber was just strong enough and thick enough to handle the shell but near the muzzle it is too thin to handle the extra pressure. I never tried the test myself and I pray to God that I never do so in the future by accident. It was fun to watch them stress test the gun under safe conditions.
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Joined: Oct 2006
Posts: 5
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OP
Junior Member
Joined: Oct 2006
Posts: 5 |
Thanks KY Jon It is a beretta AL390 not very expensive,beretta wants almost as much for a barrel a I payed for the gun
Dave
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Joined: Jul 2005
Posts: 42
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Member
Joined: Jul 2005
Posts: 42 |
MOST CERTAIN YOU CAN FIND A BERETTA 390 BARREL FOR A GOOD PRICE...390 AUTOS ARE GREAT GUNS, SO I THINK IS WORTH OF TRYING TO FIND A NEW \USED BARREL.
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Joined: Dec 2003
Posts: 189
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Joined: Dec 2003
Posts: 189 |
Are we talking about firing a 20 gauge cartridge with a 28 gauge cartridge in the barrel, or simply firing a 28 gauge cartridge in a 20 gauge barrel? (As I recall, a 28 gauge cartridge will go into a 16 gauge tube, but not a 20 gauge tube.) In the latter case I would expect no damage to the barrel although if enough gas leaked back it might harm the action. Could the "ring" he is seeing be the forcing cone?
As for why the barrel will blow with a plug at the muzzle, remember we are not talking about static pressure here, things are happening fast. When the gas reachs the muzzle it's traveling at a very high speed and piles up behind the obstruction. Think of how the plumbing may knock when you when you shut off a faucet suddenly.
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Joined: Feb 2003
Posts: 4,109 Likes: 78
Sidelock
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Sidelock
Joined: Feb 2003
Posts: 4,109 Likes: 78 |
I knew about the 16/28, but not the 20/28. I just tried it, and for a fact a 28ga shell will go into a 3 inch Beretta chamber far enough for a 2 3/4" 20 to fit behind it.
Nice to know...
"The price of good shotgunnery is constant practice" - Fred Kimble
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Joined: Oct 2006
Posts: 5
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OP
Junior Member
Joined: Oct 2006
Posts: 5 |
Gentlemen
yes a 28 ga shell in front of a 20 and shot the 28 out of the barrel, The gun survived, a credit to beretta engineering and did I say a stupid mistake. Thanks Again
Dave
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Joined: Feb 2002
Posts: 14,447 Likes: 278
Sidelock
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Sidelock
Joined: Feb 2002
Posts: 14,447 Likes: 278 |
The guys who posted here that they "didn't know" are not alone. My 28 gauge PW counter is at 17,000 plus and it's not that old. I shoot those things like BBs and I had no idea there was a 20-28 problem. I just dropped one in a short chambered 20 gauge Parker and it went way down there. Wow. Thanks for the information.
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Joined: Jan 2002
Posts: 10,720 Likes: 1357
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 10,720 Likes: 1357 |
When I guided folks bird hunting back in the day, I always insisted that they keep their hunt with me "gauge specific". If they wanted to bring two guns, that was fine, as long as they were both the same gauge. It was no great brainstorm on my part, it was what my gun safety intructors had taught me as a kid.
I remember one of the regulars on the "Purdey and port" board spilling his guts about how he had done the same, and how he was going to give up shooting the gauge of whatever cartridge had lodged in the bore (after he put it there) to avoid the problem. Seemed like a bit of overkill, but, if thats what it takes, I guess. Like the Honda ads say, "Stupid hurts".
Best,
Ted
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Joined: Jan 2002
Posts: 2,522
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 2,522 |
No apparent ring isn't an adequate description. Get out the micrometer and take some measurements fore and aft of the ring as well as on the ring. If the steel hasn't exceeded the elastic limits indicated by a bulge on the exterior I would continue to use it. The suggestion to have Mike Orlen or other quailfied individual look at it is good advice. He will have the instruments to measure for changes inside and outside.
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