chambering  p1 diameter (mm)  a external (cm 2 )  p max ( bar )  f bolt ( kgf )     f bolt
0                   5.45x39 mm             10.00              0.7854           3800            2985  n ( lbf )
1               .223 remington              9.58              0.7208           4300            3099    n (lbf)
2                   7.62x39 mm             11.35              1.0118           3550            3592    n (lbf)
3              .308 winchester             11.96              1.1234           4150            4662    n (lbf)
4       .300 winchester magnum             13.03              1.3335           4300            5734    n (lbf)
5                     .300 wsm             14.12              1.5659           4450            6968    n (lbf)
6  .300 remington ultra magnum             13.97              1.5328           4480            6876    n (lbf)
7            .338 lapua magnum             14.91              1.7460           4200            7333    n (lbf)
8            .300 lapua magnum             14.91              1.7460           4700            8339    n (lbf)
9                      .50 bmg             20.42              3.2749           3700           12117    n (lbf)

Table as JSON:
{"chambering":{"0":"5.45x39 mm","1":".223 remington","2":"7.62x39 mm","3":".308 winchester","4":".300 winchester magnum","5":".300 wsm","6":".300 remington ultra magnum","7":".338 lapua magnum","8":".300 lapua magnum","9":".50 bmg"},"p1 diameter (mm)":{"0":10.0,"1":9.58,"2":11.35,"3":11.96,"4":13.03,"5":14.12,"6":13.97,"7":14.91,"8":14.91,"9":20.42},"a external (cm 2 )":{"0":0.7854,"1":0.7208,"2":1.0118,"3":1.1234,"4":1.3335,"5":1.5659,"6":1.5328,"7":1.746,"8":1.746,"9":3.2749},"p max ( bar )":{"0":3800,"1":4300,"2":3550,"3":4150,"4":4300,"5":4450,"6":4480,"7":4200,"8":4700,"9":3700},"f bolt ( kgf )":{"0":2985,"1":3099,"2":3592,"3":4662,"4":5734,"5":6968,"6":6876,"7":7333,"8":8339,"9":12117},"f bolt":{"0":"n ( lbf )","1":"n (lbf)","2":"n (lbf)","3":"n (lbf)","4":"n (lbf)","5":"n (lbf)","6":"n (lbf)","7":"n (lbf)","8":"n (lbf)","9":"n (lbf)"}}