I believe you read my post in Marty's thread about Bersa's polygonal rifling, that pretty much sums up my opinion.(post #4)
http://thefiringline.com/forums/showthread.php?t=542479
Here is a link to my thread about my first trip to the range with my Bersa a couple of weeks ago. This is my first semi-auto (all revolvers for the rest) and this is after my first range trip with it with the first 100 rounds thru the gun.
http://thefiringline.com/forums/showthread.php?t=541518
I did a little better the last time I went, not so many low fliers, but I still haven't gotten my aim for this gun dialed in. It is a work in progress.
I love it though, and I tried a lot of guns.. even picked this one over the CZ75 PCR that was in the case next to it.. just liked everything about it.