Hello I’m new to the wildcat world and I am having a 270 Sherman built. I have a few questions. My first question is on fire forming first I read they you have to establish a shoulder on a 270 bullet by first necking it up to .30 cal the. Back down? If that’s the case why can’t I just start with a 30-06 case as skip the first step? Second the I have a lot of rl23 and haven’t seen much for reloading data on it what is or how do I determine a good starting load so I don’t over charge or under charge? All help is appreciated thank you!