Shot

Shot is a general term for projectiles launched from firearms, or possibly rockets, which are made of solid material rather than a filled warhead. Shotguns, while they can fire solid slugs, usually fire multiple pellets from one propelling cartridge. Larger artillery pieces may also fire solid projectiles; this was the first type of ammunition for artillery, and still has a role in certain applications against armor.

The term is also used to refer to a single firing of a firearm, and as a measure of alcoholic beverages (e.g., a "shot" of tequila).

Shot numbers

In the U.S., the number of pellets in a given type of shotgun shell is defined by a shot number. There are two series, birdshot and the larger buckshot. In general, the larger the number, the smaller the pellet.

Birdshot

Shot number	Diameter in inches (caliber)	Number of lead pellets per pound	Number of steel pellets per pound
12	.05	2,385	N/A
9	.08	586	N/A
8	.09	410	577
8	.09	410	577
7 1/2	.095	350	490
7	.10	300	425
6	.11	225	317
5	.12	170	243
4	.13	135	192
3	.14	N/A	154
2	.15	90	125
1	.16	N/A	103
B	.17	N/A	86
BB	.18	50	72
BBB	.19	N/A	61
T	.20	N/A	53

Buckshot

Size	Diameter (caliber)	Number per pound
4	.24
3	.25
1	.30
0	.32
00	.33
000	.36