If a shooter is happy with 20 VarTarg velocities & appreciates the barrel life of the slower round, Would downloading a 204 Ruger be a viable option for the 204 Ruger? Could a shooter realize anything close to 20 VarTarg barrel life if they were to reduce 204 Ruger velocities to similar to the 20 VT velocity? If so what propellants should a guy be considering w moderate velocity & barrel life in mind?