making 300 out of 223 and 221 questions

[Titleiiredneck]

Ok so i have a new rifle and 100 pieces of converted 221 brass.I didnot convert it but i was also given the 2 die redding set to make more. will i need a diffrent die to form 223 brass? what is the best trim die to use with 223 converted brass? what is the best trim method?

Ofcourse i would perfer 221 fireball brass but i cannot find any for sale at this time. If however i do find some whats the best trim die and way to trim this brass?

thanks again guys!,

titleiiredneck