Hello. I was looking at the option to build a 300 rum on a savage pta 18184. I was just checking if this is possible. I'm sure it won't eject a live round but will it eject a spent case. As for the bolt head would I be able to use a 300 win mag bolt head, I figured a pt&g bolt head would be a straighter piece than a factory savage piece. Can a person make the eject port long enough to eject a live round say a 4" port.