168/175gr Federal gold medal match will do the magic. I'd be surprised if twist were any less than 1:10.
Once you start reloading, the 175 Sierra TMK + Varget/4064 will be your go to load, and I'm not rich either.
Can't help you with info on the rifle, never heard of it.
Break in: lots of voodoo. The science (from what I understand) is to get a good, consistent copper base layer in the tooling marks and imperfections in the barrel. Therefore, most recommend (with the caveat that there really isnt any one perfect method) a good cleaning prior to use, then running a patch after EACH shot for the first 5-10 firings, then every other shot from 11-20, every third shot from 21-30...So on and so forth.
Others will chime in and say they've got a .2 moa barrel without nary a cleaning...
Both are correct
Depends on how methodical you want to be, I guess.