They tested my eyes (possible laser damage) and ears when I released after 15 years as a gunner (1/2 on the guns, 1/2 in the FOO hence the laser), and the MO informed I me I could 'probably' apply for disability, but there was nothing on my file in relation to hearing tests or rounds fired and it would be arduous. Ostensibly, I was informed, the TSM/GPO were to record how many rounds occurred in an exercise and place that on your file, but that is sporadic at best. I would guess that serving gunners should check their personnell files?
Ubique
Regan