40
the 40 cal is a little bigger then the 357
No. The 357 SIG magazine will not fit in a 40 caliber Glock such as the model 22.
No.
No
No
Yes, a 45 caliber bullet is bigger than a 40 caliber bullet. A .45 is0.45 inches wide in diameter and a .40 is 0.4 inches in diameter.
The .45 caliber is bigger in diameter. If you mean weight. The .45 caliber is generally heavier. However there are some lightweight .45 caliber bullets that are lighter than .357 caliber bullets. Generally speaking .45 caliber bullets weigh between 180 - 230 grains. While .357 caliber bullets generally weigh between 158 - 180 grains. If you are talking about diameter, the .357 caliber bullets are approximately 0.357 inches in diameter. The .45 caliber is approximately 0.450 inches in diameter. Again, using this measure, the .45 caliber is the larger bullet.
A .357 firearm is typically a revolver or pistol that uses .357 caliber ammunition.
As a strictly mathematical calculation, since velocity squared times mass equals energy, the .357 Sig should have more "energy" to dump into a target because it's got more velocity and velocity is worth more than weight when it comes to energy. But the .40 makes a bigger hole, will open-up or mushroom way bigger than the .357 will, and should penetrate deeper than an identical bullet in .357 caliber.
Yes, you can shoot .38 caliber ammunition in a .357 caliber firearm.
357 has more stopping power. It also has quite a bit more recoil, though.
The .40 is larger in diameter and (normally) has a heavier bullet.