More 30-30AI talk.

I believe the 30-30AI is the correct route to go but would like to add some cautionary notes:

The Ackley Improved line of cartridges differ from Wildcats as being dimensioned to also fire the parent case when headspaced correctly. To accomplish this with rimless cases the neck/shoulder juncture is made .004"-.005" shorter than the parent chamber. That means if you wish to have a true AI chamber you have to set the barrel back and then recut the chamber. This is not possible in your situation so understand you will end up with a Wildcat, not a true Ackley Imp. chamber.

Because you are working with a rimmed case you can still proceed but be careful not to deepen the rim cut. And when fireforming the brass to the new chamber it is best to form a false shoulder a bit forward on the neck to hold the case against the breachface when firing. This will keep the cases from stretching forward of the web and let the shoulder blow forward. If you are using light loads it may take several firings to fully form the shoulder.

Have the chamber/flats restamped to show the change made as to caution future users.

John

Last edited by John E; 07/29/18 08:53 AM.