I did Marks shooting school in 2007 and we put together and used the 30-378 package. I felt very competent at 1000 yds. For "hunting" purposes it is very hard to beat. This setup is not intended to win benchrest matches. The scope is very efficient for hunting purposes. I would feel very confident in buying from him. Really the value in it is buying the entire setup that is ready to go. Yes you do get the ballistics and load recipe for your individual rifle so you can load your own when you are ready. The 30-378 is a little big for the game you mentioned so the 257 may be the best for you.Are you familiar with this package? If so...what are your opinions? I like the option of the fixed recitals and the turret, like the greybull, huskemaw, & cds leupold scopes. I hope by purchasing the rifle through thomspon they could provide me with the ballistics to create the custom scope.
Personally I have a semi-custom 7RUM with Huskemaw and shoot handloaded Bergers, I love what I have but would have been money ahead to buy one of Marks packages.