Berk ,My D Grade 10 Ga. on a #3 Frame is a Hammerless made in 1902 ,it has 3" Chambers ,I ordered a letter on it hoping there would be a mention of the Chamber length but no such luck ! You might suggest to your Friend to order a letter on the gun to find out the particulars ,also maybe suggest he join the PGCA and get his Membership and save over half the cost of the letter by being a Member ! Russ
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