Which of the following is not advisable when carrying ammunition?

Carrying multiple calibers of ammunition while hunting or shooting is not advisable primarily due to the risk of confusion and the potential for accidents. When different calibers are mixed, a shooter may inadvertently load the wrong ammunition into a firearm, leading to serious safety hazards, including misfires or firearm damage.

In contrast, keeping ammunition in a sealed container is a safety practice that helps protect it from moisture and environmental factors that could compromise its reliability. Additionally, storing ammunition in a secure location is essential for safety, especially around children and unauthorized individuals. Carrying one caliber at a time minimizes the risk of mistakes and ensures that the ammunition used is appropriate for the firearm being operated, enhancing both safety and performance during shooting.