Thanks for all the input so far. Ross Carter hit upon a point that i didn't mention in my original post. The 28" barrel is shorter than I would like with trap. I use my old 870 now with a 30" barrel and like that length for trap. (My son uses a 32" on his Barrettta.)
So thanks again for all of the good advice so far, but going back to my original questions, does anyone know if you can order a trap barrel from Browning to fit my Citori 725 field version? I've been all through the Browning site, but can't find an answer.