Does anyone know the year that the 12ga EELL Diamond Pigeon Sporting with scroll engraved side plates went to Optima Bore Barrels? Also I've noticed that some have a black trigger guard and black fore-end iron and some have a silver ones, is there a certain year that this change took place? I tried to find old catalogs online, but Beretta wants $5 to down load historical catalogs and I'm not sure which year to begin looking in. Hoping one of you Beretta history buffs can help. Thanks, Mike