LC9 Chrono Data I spent about an hour or so clocking various rounds through my LC9 today. It was brutally sunny and 90 something today. I dont know the barometric pressure and my altimeter was on the fritz. I forgot to bring my directional gyro. I did make a half-hearted effort to keep the ammo in the shade. I was looking to see what the defensive ammo I had on hand would do velocity wise. I also clocked some handloads. All of the factory ammo was antique. The Ranger SXTs were the original ones with the Black Talon bullet in the plain brass case. The 147 Ranger JHP were in the original box marked subsonic or deep penetrating. The Federal 115 JHP 9BP were the standard pressure and were in a faded red box. No doubt this stuff is older than some forum members. The 115 grain Winchester Silvertip HP were older than the Ranger ammo. The Speer Gold Dot 124s were much younger, probably 10 years old or so, whenever the NJSP switched to Sigs The Chrony brand chrono was set on a tripod about 4 feet in front of a target. I used a stereovision binocular organic range finder to determine the chrono was about 15 feet from the muzzle. I forgot to take a pic of the chrono set up. Here is the data: 115 Grain STHP 10 shots Low: 1011 Hi:1059 Average:1034 Extreme Spread:48.2 Standard Deviation:15.3 Federal 9BP 115 JHP 10 shots L:990 H:1055 A:1023 ES:64.7 SD:23.2 124 GDHP 10 shots L:998.4 H:1040 A:1020 ES:45.3 SD:17.1 Ranger 147 SXT 10 shots L:936 H:967 A:946 ES:30.3 SD:8.5 Ranger 147 JHP 10 shots L:910 H:956 A:928 ES:45.6 SD:14.0 Wanna kill these ads? We can help!