re: Belgium A5 Info

From the Browning website: See. No.3
1. WILL ACCEPT ALL CURRENT FACTORY STEEL SHOT LOADS:

All Browning shotguns with the Standard Invector, Invector-Plus or DS choke tube systems, However, we do not recommend the use of Invector full or extra full chokes with steel shot. They pattern too tightly, and sometimes result in a "blown" pattern.
2. WILL ACCEPT ALL CURRENT FACTORY STEEL SHOT LOADS EXCEPT THOSE WITH T, F, BB AND BBB SIZE SHOT:
The B-2000 and B-80 shotguns with conventional chokes (Non-Invector)
3. DO NO USE ANY STEEL SHOT LOADS:
The Belgian-made A-5, Superposed, Leige, and other Belgian Over/Under models, Double Automatic, American-made A-5 and all other models not listed in category 1 or 2. Note: Belgian Auto-5 barrels are interchangeable with the new Invector barrels which are made in Japan. With this new Invector barrel installed on the Belgian-made Auto-5 receiver, steel shot loads can be used.