.375 Snipetac recipes

[KJW]

Hey everyone, new to the site but lovin the info Ive found so far. I have recently acquired myself a .375 snipetac. I guy owed me for some work and new I was looking for a long range rifle and we made a trade. Anyways, I was curious if any of you have any loading details for the gun. He gave me a few starting loads but just looking for more. Would really like to know where to start for a 260gr or 300 gr accubond. Also I got a bunch of cheytac brass that needs to be fire formed, What is everyone using for a fire forming load? Is it better to get a cheaper bullet to do this process or should I be using what I am going to shoot. Thanks for your help