Section 695(18)(i) in Police Regulations, Bengal , 1943
(i)All sentries guarding buildings which contain treasure or arms shall be armed with muskets and shall wear two ordinary pouches and one expense pouch. One pouch shall contain ten rounds of ball in a cloth bag and the other ten rounds of buckshot in a cloth bag. The expense pouch shall contain four rounds of buckshot. The buttons of all three pouches shall remain unfastened. The sentry shall have one buckshot cartridge in the breach of his musket, the safety catch of which shall be 'on'. The guard shall be provided with the same number of pouches and ammunition as sentries but they shall carry five rounds of buckshot in the expense-pouch and their muskets shall ordinarily not be loaded.