What main advantage do training mortar rounds have over service ammunition?

Training mortar rounds are specifically designed to be more cost-effective compared to service ammunition. This reduced expense enables armies to conduct more training exercises and allows soldiers to practice essential skills without the financial burden that using live rounds would impose. The cost savings facilitate increased training frequency, thereby improving proficiency and readiness while ensuring safety and efficiency in training environments.

While training ammunition may offer other benefits, such as increased safety during practice or reduced risk of collateral damage, the primary distinction is its affordability, making it advantageous for training purposes.