The origin of this rabbit hole started when I observed via YouTube some of the differences in general chronograph data. Namely Buffman RANGE's data. He does a really nice job of putting info out, but the periodic changes in barrel lengths drove me bonkers, and it always seemed there was a big gap here or there in barrel lengths. Then, add on that the M9A3's 5.1" barrel always came in with lower velocities than the shorter barrels.
So I asked Santa for a chronograph for Christmas, and guess was showed up? I wanted to chronograph a wide variety of 9mm ammo that's typical to me and what I might shoot, plus a few others I could get my mitts on. I shot over two days, the first a month ago, and then today. Had to wait to try and get similar weather when I was home to do it. It was colder today than I planned, and fairly windy, but the results are similar enough, I believe. I did shoot a couple of loads from a month ago again just for the curious party to compare against each other. Ironically enough, even though it was a tad cooler out, the reshoots today clocked in a bit faster.
Test barrels included
3" - KelTec PF9
3.3" - PX4 Storm Compact
4" - XD9
4.3" - 92 Compact
4.9" - M9
I posted the first iteration of data elsewhere, and someone pointed out that Glock barrels tend to clock the fastest due to the polygonal rifling. I don't know how HS cuts the XD barrels, but I was a bit surprised that it typically clocked velocities the same as the M9's. I have a gen 3 G22 that I was ordering a 9mm barrel for around the same time, and I got a threaded Wolf barrel, totally spacing out that they're significantly longer. Had I gotten a non threaded, I might have used it in the mix, however I'm glad I didn't. At some point in the future I'll bust it out again to compare different barrels of similar length. I've got an XD40 with a Storm Lake 9mm barrel in that I'll stack against the factory 9mm barrel, maybe test the stainless LTT Centurion barrel against the standard compact barrel, and the standard M9 and/or threaded 92 barrel against the Wolf 5" Glock barrel.
It's all relatively useless information, but that's the kind of crap that I find interesting. I tend to get hung up on minutia sometimes. If anyone else has any other grand intelligence to impart on the subject, by all means share, especially if it helps save me some time while I'm still down this trail.