Saw a few gel test with 4 layers of denum with some 9mm loads on youtube..............with a Glock 19 4"
Federal 115jhp std (9BP) 18" penetration no expansion with two bullets tested.
Federal 115+P+ (9BPLE) 1236fps 13.25" pen .578" diamiter
Federal 147 HST .......... 1050fps 11" pen .698" dia.
Federal 147 HST std........ na........ 13" pen .66 dia
Speer 124gr GD +P 1202fps ......13" penetration .615 dia.
Speer 147 std ....... 972 fps ....... 14" penetration .585 dia.
Underwood 115 Jhp 1400+ fps !!! 9" pen .884 dia please check to see if your gun is capable to use this ammo !
Best load if your gun is +P ok ,was the Federal 115 +P+ with a street record of 91% .71 dia and 13.9" penetration ,on the books.
The Speer 124 Gold Dot came in second and was at one time the load used by the NYPD with a 88% street record of one shot stops,with a center of mass shot.
The 147gr is the new kid on the block and gaining popularity.............street record of 79% so far.
Three bullet weights to choose from.........Best of luck finding the one you and your gun will like and perform well for you.