charlie i would measure the chamber length again if it is 2 5/8 inch then it was designed by factory to shoot 2 3/4 inch shell..i have 3 20 ga doubles that have 2 1/2 inch chambers and have shot 2 3/4 inch shells in them for many years with them..a study has been done on this it only raises the presure by about 150 lbs ..use plastic hull shells in 2 3/4 because they are thinner than paper hull when shooting in 2 1/2 inch chambers..but this would be up to you..this way you can fly to hunting destination and buy ammo without the airline kicking up about ammo.. charlie
|