asked how, for many years from date of manufacture, small-arm ammunition in store remains efficient for service?

The number of years during which small-arm ammunition remains serviceable in store depends upon the climate and also on the purity and heat treatment of the metal employed for the cartridge case. No definite period can be assigned. Owing to the expenditure at practice and the arrangements made to ensure turnover, the amount which becomes unserviceable is small.

What number of years can small ammunition be kept stored in this country?

As I said, that depends upon how careful one is not only in making the powder, but in making the cartridge cases. It varies from time to time.

asked how small-arm ammunition in reserve, which through age has become not efficient for service, is disposed of?

Small-arm ammunition which is found to be unserviceable is broken up, the metal being sold.