Originally Posted by Don@Tahoe
Can anyone give me the dimensions of the go-no go gauges for a 30-06, I would like to turn my own.
Ok For one you don't turn a gage, they are ground to proper shape an length.
Two, you would need to be able to machine the gage to a tolerance of +/-0002"
Not something the average home shop is capable of doing.
Not to mention how are you going to measure it?? To make sure it's correct??
Just spend $60 and be done with it.
But if you think you can do it here you go.
Keep in mind you will have to indicate the 17.5 degree angle as a minor variation will create a to long or too short gage.
Should be made from A2 tool steel, rough machined, heat treated to Rc 57-60, and ground to final size with the angle being +/- 5 MOA, OAL +/-.0002" and gaging datum line +/-.0002"
Add .004" for a no go gage and .010" for a field gage.
If the barrel is off the gun and you have a .375" ball bearing and know trig you can measure the headspace.