MistressValerie said:
I'd take the .357 in that case for its assured power and high capacity. (This would be a .357 Sig, I would assume, rather than a .357 Magnum revolver.) Ballistics of the .357 Sig are similar to a light .40 S&W and should be very effective; I would happily carry one in real life 🙂
I think .40 SW barrels are interchangable with .357 Sig and 10 Norma.
They are supposed to be weaker than true .357 M - but magazine size shouldn't be too off a 13 shots.
.357 Sig are bottleneck-cased, so they are fairly slender and jam-resistant; considering ball's girth is close to 9mm shots, they offer a good punch in a fairly minute package.
From an older doc I had pieced together for academic reasons I can offer these datas:
.357 S are marginally better than .40 SW - offering a kinetic advantage of 100J over the average
550J of a typical .40SW.
They also have better ballistic qualities.
It should be said .40 SW are usually chambered as wadcutter and semiwadcutter only - typically clumsy bullet types.
.357 M on average have similar ballistic qualities as .357 S, with better kinetic energy potential.
With longer barrels they can be almost twice as effective, rated at over
1000J [compare with .357 S's
650J...]
.380 Luger shots - that is 9mm Parabellum - are a tad nimbler than .357 S [better ballistics] with an average power of
450J [500-600 over longer, SMG, barrels].
5,7 mm * 28 shots are a new generation bullets. They were invented by FN Herstal for FN P90 compact SMG, and carried over to FN FiveseveN military handgun.
They are even nimber than 9mm, with a catch: while technically speaking they have an average kinetic energy potential [perhaps
500J?], they have special piercing heads, capable of defeating class II combat vests - rising *effective* power well over
1000J.
Since they are high-speed and low-mass, they are much more effective at puncturing vests, than at stopping hostiles; unless they pierced vitals [counting on hydrostatic shock effect, if it really exists, at least...] they would pass through targets without causing serious wounds.
Hope this helps.
🙂
I'll be adding more datas, so Norm can rely on fact to play better.