Hello
Most of the 9mm reviews that I did were shot with two guns.
A SIG 365 SAS, with a 3.1 inch barrel and a Taurus G3 with a 4 inch barrel.
First I do forensic exam of the ammunition. Next I shoot a group while chronographing with each gun. 10 yards with the SIG, three rounds and 15 yards with the G3, five rounds. Chronograph is a Oehler 35P
Then the ammunition is shot out of each gun into a 55 gallon plastic barrel of water. The bullets are then recovered, photographed and then measured for expansion. In cases where the bullet fragments and loses its jacket, a weight is taken with all the recovered material and also a weight taken with just the lead core.
Here is the link to all the photos of the review;
9mm Fiocchi Def Dyn 124gr JHP — Postimages
Data Sheet
I was quite impressed with this product. You get nice even expansion with no jacket separation and very little loss of weight in either gun. Pleasant to shoot. For a modest cost of roughly 57 cents per round it is a good choice for the budget minded shooter.