Right in the shooters handbook. It doesn't matter whether I or you or anyone else agrees with the rules, they are there to be enforced.
SHB, page 18
o A shooter should not be allowed to pick up a dropped firearm. The CRO/TO
should recover the firearm, examine it, clear it (if necessary), return it to
the shooter, and assess the appropriate penalty.
You might as well start the engine and go home. If you don't want anyone handling your firearms don't bring them to a match. As stated, the rules say any dropped gun will picked up and cleared by the match official. Don't like it? Leave your "precious" at home.