With a 1 1/4 oz proof it has original 2 3/4" chambers. I have a grade 3 model 400 with the screwgrip locking from 1906 and it has become a favorite skeet gun. Finish work inside and outside is just amazing. I also have a model 500 which is a notch up and has a fancy back. Few of these were made.


John McCain is my war hero.