gun class (pdr)  shot diameter (cm)  shot volume (cm 3 )  approx service bore (cm)  mass of projectile (kg)
0                2                6.04               172.76                      6.64                  0.90846
1                3                6.91               172.76                      7.60                  1.36028
2                4                7.60               230.30                      8.37                  1.81339
3                6                8.71               345.39                      9.58                  2.71957
4                9               10.00               518.28                     11.00                  4.08091
5               12               10.97               691.22                     12.07                  5.44269
6               18               12.56              1036.96                     13.81                  8.16499
7               24               13.82              1382.65                     15.20                 10.88696
8               32               15.21              1843.50                     16.73                 14.51572
9               64               19.17              3686.90                     21.08                 29.03063

Table as JSON:
{"gun class (pdr)":{"0":2,"1":3,"2":4,"3":6,"4":9,"5":12,"6":18,"7":24,"8":32,"9":64},"shot diameter (cm)":{"0":6.04,"1":6.91,"2":7.6,"3":8.71,"4":10.0,"5":10.97,"6":12.56,"7":13.82,"8":15.21,"9":19.17},"shot volume (cm 3 )":{"0":172.76,"1":172.76,"2":230.3,"3":345.39,"4":518.28,"5":691.22,"6":1036.96,"7":1382.65,"8":1843.5,"9":3686.9},"approx service bore (cm)":{"0":6.64,"1":7.6,"2":8.37,"3":9.58,"4":11.0,"5":12.07,"6":13.81,"7":15.2,"8":16.73,"9":21.08},"mass of projectile (kg)":{"0":0.90846,"1":1.36028,"2":1.81339,"3":2.71957,"4":4.08091,"5":5.44269,"6":8.16499,"7":10.88696,"8":14.51572,"9":29.03063}}