There is no "Standard" choke. A5's could be purchased with one of many different chokes, however, the more common chokes on a 28" barrel were Full and Modified
take it to a gunsmith
(ON REAR LEFT-SIDE OF BARREL) '*' designates full choke (F). '*-' designates improved modified choke (IM). '**' designates modified choke (M). '**-' designates improved cylinder choke (IC). '**$' designates skeet (SK). '***' designates cylinder bore (CYL).
The Browning made screw in chokes were available for most choke sizes
no
They were made. The code on the left rear of the barrel for a cylinder choke would be ***. Improved cylinder is marked with two astricks and a minus sign,so **-. Here are the Browning choke markings: * =Full.*- = Imp. Mod.,** = Mod.,**- = Imp.Cly., **$ = Skeet and *** = Cly.
Although both are interchangeable, a true Sweet 16 barrel will have three holes drilled through the barrel band. This was one of the ways Browning lightened the barrel. The rib will also be a smidge thinner than on a regular barrel.
It will be marked on the weapon.
Check the barrel and receiver.
No
They came in different lengths.
Please go to the following link: http://wiki.answers.com/Q/What_is_the_value_of_a_Browning_Sweet_Sixteen
Change the barrel unless it has removeable choke tubes. In that case, change the tube.