Optical chrono users

[itchyTF]

Don’t know if this would be of any help for anyone else but it helps me. I use a laser pointer to align the screens to the barrel. I used to just rubber band it to the bottom of the barrel but keeping it aligned with the axis of the barrel was a bit of a pain. So, I came up with this.

The beam is not aligned with the axis of the tube so I rolled it in a V block to find its lowest point. In that orientation I align the beam toward the bottom of the screen window so I’ll be sure not to hit it.
I milled a cavity to accept the on/off button so you need to just slide the pointer back in the delrin to turn it on. Once everything is aligned, remove it and you’re ready to go.

 

[rayporter]

with a bolt action i just remove the bolt and place the laser in the action. it will shine down the barrel.

 

[itchyTF]

with a bolt action i just remove the bolt and place the laser in the action. it will shine down the barrel.

That was an option but I already had this pointer and I like projects. As I recall some of those chamber lasers are universal and others are cartridge specific.

 

[rayporter]

the kind made to go in the bore will fit in the action, too.