Think your 525 has the overbored barrels correct? Should be about .740, after shooting trap for 35 yrs I can tell you that overbored barrels and long forcing cones are way more effective than porting. Porting has lost a lot of following over the years in trap. The Beretta should have a little less felt recoil but you can also load down to 1 oz and a Windjammer wad and get light recoil on your 525 too. If you go too light with the semi-auto you get malfunctions. Both great guns have fun.
