Low bore axis? What is it? Well if you have ever met a hardcore CZ pistol enthusiast you most likely have heard it a time or two. That is exactly where I heard it. Now don’t get me wrong I love, and own an arm full of CZ pistols! Now let’s take this saying to the lab and do some measurements.
Here is the line up picked at random.
Here is the work space. I will be using a leveled Doall garnet surface plate 24”x18”
This plate was never abused and is still accurate to .0002 across 24”, and can be verified by a collimator.
I will be using 1,2,3 blocks to hold pistol in a level state. I will also be using gage pins to find true bore center.
So all pistols being measured will be chambered in 9mm Luger. I will measure the highest point in the grip (unless it is angled. Then the measurement will be the center of the beaver tail) to the top of the gage pin. The height will be added and 1/2 of the gage pin to get to true center of the bore.
(Remember when the dual beam height gage is moving in the downward motion the dial will spin “backwards”)
This measures.825”. Now the gage pin had to change to a .345” due to the polygonal rifling. So .825+.1725”= .9975” wow nice!
Holy cow! I even measured this twice.
@Mister_Torgue for not having a Star pistol in it, so Mister_Torgue this ones for you Brother!
We have a Star Super B!
Ok so we have
CZ75 SP01 1.103”
Glock 17 .7855”
HK USP 1.4025”
Beretta 92s 1.214”
Sig 226 1.332”
Star Super B 1.240”
So what can this tell us? Well the CZ has a good low-ish bore axis, but the PPQ, and Glock 17 are lower!
I was shocked at the results personally.
Now why has the CZ pistols have a low bore axis been a “mic drop” saying in forums and at the range? Well let’s turn to historical evolution of handguns. In 1975 and moving forward I’m sure the CZ pistols certainly had the lowest bore axis, but once Gaston Glock showed up apparently he was going for a low bore axis as well.
I realize that there is a lot of other pistols that offer a low/lower bore axis on the market. The Strike one comes to mind.
The real question is what do you think?
What have your experience’s been?
I hope you had fun reading this, and I hope @Mel64D approves of the lab set up and equipment used for our measurements.
Thank you all for your time, and like always be safe and have fun!