.357 Mag vs .380 Auto
The .357 Mag vs .380 Auto comparison spans the gap between magnum revolver power and pocket pistol convenience. The .357 Magnum (125gr JHP at 1500 fps) delivers 479 ft-lbs at 50 yards while the .380 Auto (90gr JHP at 1000 fps) produces 166 ft-lbs. The .357 Magnum penetrates 18.0-18.6 inches, exceeding the FBI's 12-18 inch optimal zone, while the .380 Auto falls short at 8.8-9.0 inches. Recoil differs by a factor of six: 9.11 ft-lbs for the .357 Magnum versus 1.41 ft-lbs for the .380 Auto. The .380 Auto fits in a pocket; the .357 Magnum demands a full-size revolver but stops threats with authority.
Ammunition Parameters
.357 Mag Parameters (Self-Defense Load)
.380 Auto Parameters (Self-Defense Load)
.357 Mag vs .380 Auto Ballistics Chart
Comparing bullet drop at various ranges between .357 Mag and .380 Auto.
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.357 Mag vs .380 Auto Energy Comparison
Comparing the muzzle energy and energy retention at various distances between .357 Mag and .380 Auto.
.357 Mag vs .380 Auto Bullet Penetration
Comparison of estimated penetration depth in 10% ballistic gel between .357 Mag and .380 Auto at self-defense distances.
Self-Defense Ammunition Penetration
Notes:
- FBI standard for optimal penetration is 12-18 inches in 10% ballistics gel
- Our penetration data is calculated using mathematical models based on sectional density, velocity, and expansion factors. While not actual gel tests, our calculations have been validated against manufacturer test data and provide reliable estimates for comparison purposes.
- Actual results may vary depending on clothing barriers and other factors
.357 Mag vs .380 Auto Recoil
Comparing recoil energy and impulse between .357 Mag and .380 Auto.
.357 Mag Recoil (Self-Defense Load)
.380 Auto Recoil (Self-Defense Load)
Notes:
- Recoil calculations based on bullet weight, velocity, powder charge, and firearm weight
- Recoil energy indicates the felt force when firing the weapon
- Recoil impulse represents momentum transfer during firing
- Actual felt recoil can vary based on grip, stance, and firearm design
.357 Mag vs .380 Auto Velocity
Velocity decay from muzzle to 50 yards for .357 Mag and .380 Auto.
.357 Mag vs .380 Auto Average Cost
Comparing cost per round and training affordability between .357 Mag and .380 Auto.