I see that you are looking for xfired brass, this is just me but your new rifle deserves a new new/virgin brass, whichever you end up choosing. We all have varying personal experiences and you'll have to sort them out yourself. There is no substitute for personal/hands on experience. As far as brass relative to cost, I have very good luck with Winchester brass, once they are sorted/culled for uniformity (weight, length, concentricity, etc.), they are not too bad. Others will pay for a premium priced brass to alleviate the sorting process. The actual loading, load development varies from basic to ultra meticulous process to gain as much accuracy as possible. Many choices to consider in the learning process ... take your time and enjoy it.