Making Brass for my Stoney Point Tool

[fingers284]

When you go to tap the threads you will really find out if your method of holding the brass works well or not.

I question whether or not it matters if the hole is drilled and tapped a little bit crooked. I don't think it will hurt the measurement that we are trying to acquire. In my mind it would just cause the tool to come out of the back of the gun a little crooked when being used. I think it just needs to be somewhat straight.

Depends on what caliber your measuring, a 416 will require less accuracy because the rod has a bigger hole at the cartridge neck to hit but if you're using a 223 or 204 a very slight off center/tilted thread won't allow the rod to hit the back of the bullet.