Don’t give up that easily. Because they can also review what your duties were in service. If you were constantly around firing guns, you have something to work with. Just need to go get seen for it now so that you have a diagnosis when you file. This is something I just pulled up from a recent VA decision regarding hearing loss.
“It is noteworthy that the lack of any evidence showing the Veteran exhibited hearing loss consistent with the regulatory threshold requirements for hearing disability during service (38 C.F.R. § 3.385 ) is not fatal to his claim. The laws and regulations do not require in-service complaints of, or treatment for, hearing loss in order to establish service connection. See Ledford v. Derwinski, 3 Vet. App. 87, 89 (1992). Instead, where there is no evidence of the appellant's hearing disability until many years after separation from service,“if evidence should sufficiently demonstrate a medical relationship between the appellant's in-service exposure to loud noise and his current disability, it would follow that the appellant incurred an injury in service." Hensley v. Brown, 5 Vet. App. 155, 160 (1993).”
