RDub
Member
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 FEDERAL Punch 124gr JHP — Postimages
Data Sheet
The bullet weight is actually 125 grs. The cress-cross pattern you see on the expanded bullet is the result of this round penetrating all the way through the water, with both guns, having just enough energy left to kiss the bottom of the barrel where the collection screen lays. Expansion was very decent in both guns with no jacket separation. Accuracy good enough. Did not quite make advertised velocity.
