Thanks. In Indiana, as long as it shoots a .243 or bigger bullet, and the case is over 1.062 long, you are good to go. No straight walled restriction. If you have the cajones, you can use a .50 bmg.
OTOH, our CF rifle regs are .357" bullet minimim, case must be 1.062 - 1.625. No straight wall restriction. Both pistol and CF rifle can only be used in our "gun" season.