Where can information about specific procedures for ammunition issue and turn-in be found?

The correct answer highlights that DA Form 6261 provides the specific procedures for ammunition issue and turn-in. This form is designed to facilitate the proper documentation and accountability necessary when units issue or receive ammunition. It contains relevant instructions and requirements that guide personnel in adhering to standard operating procedures, ensuring safety and compliance with regulations.

In contrast, the other options, while relevant to military operations, do not focus specifically on the detailed procedures for ammunition handling. AR 190-13 pertains to the security of Army installations and doesn't cover ammunition processes in detail. DA PAM 710-2-1 provides guidance on inventory management and supply procedures but is broader in scope and not limited to ammunition. FM 3-22.9 discusses the use of rifles and does not provide specific turn-in or issue procedures for ammunition.