Fact or Myth?

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OwnerITO

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I have a question and hopefully I can get some insight from you viewers on an answer. Here goes: If I buy a shotgun (make not important) that is chambered for up to 3 1/2" will it have a dramatic effect on pattern and distance if I only wish to use 2 3/4" shotgun shells in opposed to buying a shotgun that is fitted only for 2 3/4" shotgun shells?
 
Not likely since you effectively have a backbored chamber in this scenario.
I shot in the 24's in trap with my 3" chambered 870 Rem and yes that's with 2-3/4" shells so I certainly see no reason to beleive your performance will suffer if you have a 3-1/2" chamber.
Just make sure you pattern any loads before getting serious about shotgunning, different loads and makes of shells definatly do perform differently.
 
It's makes no differrence. Perazzi and Beretta make the majority of their target guns with 3" chambers and it's quite likely none of these guns would ever see a 3" shell.
 
Nope. The choke affects the pattern. Not the length of the round. A longer round will give you more pellets in the pattern though.
 
Once I was told that if you fire shorter shells than the gun is chambered for, it will erode the front of the chamber and possibly destroy the gun.
Has anyone else heard this malarky before?
 
I haven't heard that one. I have heard that after a lot of 2-3/4" shells you may experience difficulty chambering 3-1/2 due to lead buildup on the forcing cone. Not sure I buy into this theory either.
 
Craftsman 441 said:
Once I was told that if you fire shorter shells than the gun is chambered for, it will erode the front of the chamber and possibly destroy the gun.
Has anyone else heard this malarky before?
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Nope. That's a new one one me. My main target gun has a 3" chamber and I've fired more than 50 thousand 2-3/4" shells through it. The chamber is just fine.
 
Greenhorse six said:
I read some where (been looking ,can't find it yet) that it improves pattern because the shot deforms less with the longer forcing cone.
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That would be true only if there were a longer forcing cone. A longer chamber doesn't necessarily mean a longer forcing cone. The two are unrelated.

Chamber length is only an issue if the round going in the chamber is longer than the chamber - shorter doesn't matter. You do have to keep your gun clean or rounds that are the full length of the chamber will stick in the muck on the chamber walls. This is more of an issue for hand guns, carbines, and other brass cartridges, but I suppose you'd get a pretty ugly build up in a shotgun, too, if you never clean it.

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