Relax

, I wasn't holding my first .204 when I joined up either. I DID have the barrel, but it took a month or two before I got around to having it screwed into the action.

In the meantime, Glen (ONE EN) the other moderator, helped me get lined out on some loading hints and helping me past my 40 gr. bullet woes. Like so many of us here, my rifle would NOT shoot those Hornady 40s, but Glen set me straight on the 39 Sierras, and pointed me towards the 4895 powders, and all was soon right in my little .204 world. He's pretty helpful!
In any event, read some posts, soak up the know-how, and get yourself prepared to get your .204. Then, when that box comes home with you, you'll have a good idea of how to proceed.
This is a good bunch of folks, little need for any moderation here, lemme tell ya.

It makes the moderator job pretty superflous, to tell the truth. We're just here for the cameradery, like everyone else.
Build a man a fire, and he's warm for a day. Set a man on fire and he's warm for the rest of his life!