1911 in B. W. Tuchman Stilwell & Amer. Experience in China (1971) ii. 39 Many had new ammo belts and plenty of cartridges, some were standing around, pistol in hand, finger on trigger.

1917 A. G. Empey Over Top 297 When this magazine is emptied you shout for 'ammo' but perhaps No. 2, the ammo carrier, is lying in the rear with a bullet through his napper.

1944 Hutchinson's Pict. Hist. War Oct. 78 Then you must leave it to the law of averages that the individual tanks, guns, ammo-dumps..and so on are directly hit. As the bomb strikes rush across the target area you see the petrol and ammo..bursting into flames.

1973 T. Pynchon Gravity's Rainbow (1975) i. 75 Loudest..is Mr. Pointsman, often using for ammo statistics provided him by Roger Mexico.

1987 T. Winton Minimum of Two 83 I learnt about how stupid it can be to stick to your guns after your ammo's run out.

2008 Field & Stream Aug. 38/2 I've gotten my 12-gauge ammo prices down to about $4.30 a box.