How old was the article? I could see a claim the 682 would be stronger 20 years ago when it was built on a wider frame but today the 686 and the 682 frame and locking mechanisms are the same. Between the Beretta and Browning I don't think one is stronger than the other and I've owned both.I also found an interesting write up suggesting the Beretta 686 stock design is designed for "heads up" shooting style, hence the fairly vertical grip and sloping stock. Apparently many people find this uncomfortable. The same write up said the 425 is stronger than the 686, but that the 682 may be even better.
Personally I prefer the Beretta because they tend to fit me better and I like their handling dynamics more but there are many people who like the Brownings.
The 20 gauge is slimmer but not that much shorter because the Browning's locking mechanism is located under the barrels. It seems to me the Berettas in 20 gauge are more compact than the comparable Brownings.It seems that you can get a fairly basic Citori for about $500 less than a 686 Silver Pigeon. Unfortunately I have only been able to find 12g Citoris in town so I don't know how much trimmer a 20 would be. She is 5' 6" and the distance from the inside of her bent arm to the middle of her trigger finger is 13"
How physically strong is your wife? Having introduced several women into the shooting sports I've found gun weight is more of an issue than pure recoil. She might be better off with a 20 if she can't manage the heavier weight of the 12.
Browning and Beretta both make good guns but until she tries them you won't know for sure. Don't over think the decision but be prepared to change guns if it doesn't work out for her. There is always a good marked for used B guns.


















































