Smoothbore Gun Sizes
| Common Name |
Bore size (inches) |
Common Name |
Bore size (inches) |
Common Name |
Bore size (inches) |
|---|---|---|---|---|---|
| 1-pdr | 2.02 | 2-pdr | 2.54 | 3-pdr | 2.91 |
| 4-pdr | 3.20 | 5-pdr | 3.45 | 6-pdr | 3.67 |
| 7-pdr | 3.86 | 8-pdr | 4.04 | 9-pdr | 4.20 |
| 12-pdr | 4.62 | 16-pdr | 5.09 | 18-pdr | 5.29 |
| 24-pdr | 5.82 | 32-pdr | 6.41 | 42-pdr | 7.02 |
These values were calculated using 0.2685 as the density of cast iron, and assuming an additional 5% for windage.
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