Re: First long range gun
This is really dependent on the individual but my viewpoint is that it is the load that defines the long range hunting rifle. It appears you have gone through the thought and expense to have a custom built so you appear quite motivated. Learning and understanding the load devopment process will give you full mastery of the sport. While it may seem complex and intimidating, it's not that difficult if you are willing to learn. As previously mentioned, there is a lot of information available and many people, particularly on this site, that are more than willing to share information. IMHO.
"Let us speak courteously, deal fairly, and keep ourselves armed and ready"-T. Roosevelt