Quite possilble
when did the make the smithsonian double barrel shotgun
No
Yes in 1860 Stevens made a double barrel, all steel barrel and its has external hammers.
no
The BSS
no homer Simpson did
From 1895 to 1902
YES
Depends entirely on the make, condition and usability.
What make? SKB?
The front trigger opened the breach.
Why the **** would you want that!?!?!