Numbering
Equivalence table for cartridge shot types.
Shot numbering by country
| mm. | SPAIN | USA | GREAT BRITAIN | ITALY | UNITS IN 10 g |
|---|---|---|---|---|---|
| 1.50 | 11 | 11 | 11 | 11 | 259 |
| 1.75 | 10 | 10 | 10 | 10 | 303 |
| 2.00 | 9 | 9 | 9 | 91/2 | 208 |
| 2.25 | 8 | 8 | 8 | 8 | 145 |
| 2.37 | 71/2 | 71/2 | 71/2 | 71/2 | 130 |
| 2.50 | 7 | 7 | 6 | 7 | 106 |
| 2.75 | 6 | 6 | 5 | 6 | 79 |
| 3.00 | 5 | - | 4 | 5 | 63 |
| 3.25 | 4 | 4 | 3 | 4 | 51 |
| 3.50 | 3 | 3 | 2 | 2 | 40 |
| 3.75 | 2 | 2 | 1 | 1 | 32 |
| 4.00 | 1 | B | BB | 0 | 27 |
| 4.25 | 0 | BB | BB | 2/0 | 22 |
| 4.50 | 00 | BB | AA | 4/0 | 19 |
| 4.75 | 0000 | - | AAA | 5/0 | 17 |
| 6.20 | Posta | - | - | 7/0 | 7.14 |
| 6.80 | Posta 6.80 | - | - | 8/0 | 5.41 |
| 7.40 | Posta 7.40 | 1 Buck | SSG | - | 4.39 |
| 7.64 | Posta 7.65 | 0 Buck | SP.SG | 9/0 | 3.80 |
| 8.65 | Posta 8.65 | 00 Buck | SG | 10/0 | 2.80 |