Hi, I've used these loads quite a bit when hunting for Sharptails. IMO they are a very effective load. They hammer the birds out to 35 yards. I use 6 shot in this loading. I also use (in my tighter choked bbl) a 1 1/16oz load that B&P offered (EXTRA ROSSA MAX) also in 6 shot (Italian, close to American size 6's). Both of these loads pattern very well in my Dickinson BTW.
I wouldn't hesitate to shoot these loads in any modern 28ga. Of course you'd need to pattern to see how they perform in your guns.
Just a side note, if anyone knows where a person can get some of the Extra Rossa Max in 1 1/16oz I'd appreciate it. According to Kari at Aerostar they are are no longer imported.
Good Luck and happy shooting!
Greg