Originally Posted By: FULLDRAWXX75
Two different ways:

One, buy the tool that will tell you the depth.

Two, put together a dumby load slightly longer than the recommended length, insert in chamber to test the fit. You are looking for the action to close COMPLETELY without force and just start to show signs of the rifling on the bullet. I have used this method many times on my own rifles, be patient and don't force it.

FDXX75



Good deal, just make sure it is a dunny round. If you have ever dumped powder into your action and have a bullet stick in the rifling you will learn not to use a loaded round. ;\)
_________________________
...they never call me by my name, just Hillbilly...