Friday, May 06, 2016

Chrono Wednesday Part I...

The Steyr is waiting on ammo other than my stash of underpowered CCI 115gr Blazer Brass to continue building the round count, but that doesn't mean I can't do any shooting with it. I've got a large stash of partially-full boxes of stuff, and I figured I'd get some numbers off different loadings with the chrono.
I pulled some Sellier & Bellot 124gr FMJ and some Federal Tactical 147gr +P HSTs  out of the ammo can to test. Being the cautious sort, I loaded and fired ten rounds of the S&B to make sure I wasn't throwing good money after bad. They seemed to cycle the gun with adequate vigor, and so I set out to shoot a couple strings for the record.

Here are the results I got:
Sellier & Bellot 124gr FMJ
LO: 1054
HI: 1092
AV: 1073
ES: 38.46
SD: 11.18

Federal 147gr +P HST
LO: 960.4
HI: 993.2
AV: 979.8
ES: 32.79
SD: 12.76
Note that the S&B is traveling the same velocity, roughly, as the lighter 115gr Blazer Brass. It's still fairly mild shooting, being some 70fps slower than various 124gr Fiocchi or Winchester Q4318 "NATO" loads I've tried out of comparable test guns.

All thirty rounds fired without a hitch. A reader informed me that Steyr had changed the extractors in these, and so that's an issue I'm going to look into given the last range session's FTEs.

This makes 330 rounds fired through the Steyr C9-A1 without cleaning or lubing, with one failure-to-fire (#8), three failures to extract (#234, #266, #276), and one failure to go completely into battery (#116). 1,670 rounds left to go.