Maybe i will try a new World Record. I live in NW AZ and one of my best shooting spots has over 10k of open desert. I is a raised shooting position. I have access to 460 Steyr with 40in barrel and 600gr CE bullets.
Ultimately, standards are arbitrary. If you choose to say that you were the first to hit a target 5 miles away (or 6 or 10 or whatever), if nobody has ever done that, then you can write the rules, such as target size, number of shots to hit the target, etc. But if nobody has ever hit a target at a specific distance and you are the first to do it, then you do then have the lowest common denominator "record". We can set more stringent standards, such as requiring a 1 MOA target or getting a hit in 5 or fewer shots or getting 3 in a row, etc., but it's still arbitrary.
One of these days, someone will wash out a barrel trying to get that first hit. That is an even lower standard. Well, I have friends in low places, so let's go shootin'.