The barrel of the Browning Hi-Power (about 4.75") is just a tad longer than the Bersa. The Hi-Power is also more thin overall than the Bersa. Because the Bersa has ambi-dextrous slide release and decocker, its profile is a little wider. I have both and I like both. I have several "plastic" pistols, but I still prefer the "all metal" guns, like the Hi-Power and the Bersa.
I am looking for the Bersa 40 Ultra Compact in either the Stainless or the Duo-tone but have not been able to fine them. I find the Thunder Full Size which I will get someday but I want to stay with the UC for now. I have the UC in the 45 Stainless and that shoots real nice. I think the full size is more accurate at longer distances than the UC. The barrel is only 13/16" longer than the UC but I compare the full size to the Taurus PT92. You can get the full size in the 17+1 also.:smt1099
I am certainly hoping that these Bersa Thunder 40's tighten up after running a hundred or so rounds through them. At 15 yards I could barely hit an 8 1/2" x 11" piece of paper. 30 rounds later it seemed to be closing the group up a bit.
Just to be sure it wasn't me I popped 20 rounds through my Mitchell .45 and made some tight groups.
The Bersa felt good and didn't have a fail to fire or feed. Just seemed loose. It could be the sights though. May need to look into getting them swapped out.