a while back i was considering having a 410 bored to improved cylinder or maybe modified. to compare the two, i used my browning citori 410 with and changed between skeet chokes and modified chokes. on a skeet field, i shot consistant scores, within a bird or two, over four weekends of shooting, about 16 rounds or 400 birds, 200 with each choke.
i didn't bother having the choke on the handi opened up !
sg