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Old July 30, 2012, 12:36 PM   #10
BigJimP
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Join Date: February 23, 2005
Posts: 11,392
There are still a lot of 20ga guns being made today that will not shoot 3" shells ...chambers on these guns are marked 2 3/4" .../ probably more common on O/U's than pumps or semi-autos...

In guns today - the word "magnum" is used in marketing ...and can mean all kinds of things...so its dangerous to assume it always means one thing...../ while it is common for it in a 20ga to mean that the gun is chambered in 3" shells ...and that refers to the chamber in the barrel - not just the receiver / that needs to be a llittle longer or with a bigger port to cycle spent 3" shells.

Remember the length of a shell - is the "fired length" ...not the "pre-fired length".
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