2.75" barrel on a 3" chamber

C

cpileri

New member
If a guy had a 870 12ga 3" express magnum (factory), and later bought a used police 18" barrel that saif 2.75" on it; which would take precedence?
With the 18" 2.75-chambered BARREL on a (formerly?) 3" receiver, can it fire 3" shells or is it limited to 2.75" shells?
thx,
C-
 
Like Dave said. Barrel specs have precedence.
High pressures likely with longer shells, not enough room for the crimp to open up.

Sam
 
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