Which of the following actions is not allowed when someone is downrange?

Handling ammunition is not allowed when someone is downrange because it poses a significant safety risk. The primary concern during any shooting practice is to ensure that no one is in danger. When someone is downrange, it is critical that all firearms are made safe and that ammunition is not being handled, as this could lead to an accidental discharge.

Grounding the rifles is a safety procedure that indicates the firearms are rendered safe and not to be touched while people are downrange. Checking the targets is a necessary part of the shooting process and is done only when it is safe to do so. Waiting quietly is a general safety practice that maintains focus and calm while ensuring no distractions or accidental movements occur.

By understanding the importance of safety protocols, particularly around the handling of ammunition, shooters can ensure a safe environment during air rifle practices and competitions.