Regulating express style iron sights on a dangerous game rifle

[Grumpy gumpy]

That is a good idea. I’ve got a simple jig to file the "v" notch, (so simple it looks like a piece of wood with some aluminium stewed to it )but if you take too much off you are stuffed, a plastic sacrificial piece is a much better option
Gumpy

 

[Jefferry404]

there is no filing, once the 3D print is dialed in, the steel sight is
CNC machined to exact same v groove.
Below is the toolpath. Machine time is 3 1/2 minutes.

For those that file, the 3D printed sight can be printed to shoot app. 4-8 inches high at 100yds , then file on the plastic 40-80/1000" to dial in, then file on the steel sight to the same depth.