The .357 Sig actually surpasses ballistic performance of the .357 Magnum in the lighter bullets.
Especially out of a shorter barrel (from 4 inches or less), the .357 Sig puts out a 110 to 125gr bullet at faster velocities than the .357 Magnum in the same barrel, for most of the new .357 Sig loads.
For some reason that I don't know about nor care about, the .357 Sig does not launch the heavier bullets quite as fast as the .357 Magnum. On the other hand, no one has really tried to develope the heavier bullets in the .357 Sig loads, because no one needs them, so who knows what they could do if someone developed such a load to it's potential?.
The 125gr .357 Sig penetrates 16 inches in bare gelatin and even more in clothed gelatin.
The only reason to go to a heavier bullet would be for more penetration, and the lighter to medium weight .357 Sig rounds penetrate very effectively, and some would say they penetrate too much. So, why go to a heavier bullet in a personal defensive piece?
Out of a smaller gun, the .357 Sig pushes a 125 grain bullet much faster than the equivalent .357 Magnum, and I don't see any need whatsoever to go to a heavier bullet than the 125gr for personal defense, since it already penetrates 16 inches reliably.
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"On a long enough time line, the survival rate for everyone drops to zero"
- Jack, Fight Club
Especially out of a shorter barrel (from 4 inches or less), the .357 Sig puts out a 110 to 125gr bullet at faster velocities than the .357 Magnum in the same barrel, for most of the new .357 Sig loads.
For some reason that I don't know about nor care about, the .357 Sig does not launch the heavier bullets quite as fast as the .357 Magnum. On the other hand, no one has really tried to develope the heavier bullets in the .357 Sig loads, because no one needs them, so who knows what they could do if someone developed such a load to it's potential?.
The 125gr .357 Sig penetrates 16 inches in bare gelatin and even more in clothed gelatin.
The only reason to go to a heavier bullet would be for more penetration, and the lighter to medium weight .357 Sig rounds penetrate very effectively, and some would say they penetrate too much. So, why go to a heavier bullet in a personal defensive piece?
Out of a smaller gun, the .357 Sig pushes a 125 grain bullet much faster than the equivalent .357 Magnum, and I don't see any need whatsoever to go to a heavier bullet than the 125gr for personal defense, since it already penetrates 16 inches reliably.
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"On a long enough time line, the survival rate for everyone drops to zero"
- Jack, Fight Club