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Old 05-25-2011, 10:08   #14
ColoCG
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Join Date: Mar 2011
Location: Colorado
Posts: 928
Quote:
Originally Posted by WiskyT View Post
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 donít 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 SXTís 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 124ís 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

Good info Wisky. I did some testing on my Kahr PM9 with 3" barrel about a month ago, only it was about 40 degrees cooler. I had a lot of similar results as you with factory and reloads.

124gr. GDHP 5 shts. avg.= 1045

147gr. GDHP 5 shts. avg.= 910

124gr. Berry's HP 5 shts. avg=1016
5.8gr Unique

124gr. Berry's HP 5 shts. avg=1021
5gr. WST

147gr. GDHP 5 shts. avg= 830
3.7gr. WST

147gr. GDHP 5 shts. avg.=806
4.3gr. Unique

I need to get some Power Pistol and try that, how do you like it. Also how is you accuracy with you LC9, looks like a real nice gun. I love my PM9 shoots as good or better than my G26.
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