.38 Special vs .45 ACP
Part of our full caliber comparison chart — energy, drop and recoil for every handgun caliber side by side.
When evaluating .38 Special vs .45 ACP for self-defense purposes, several key ballistic differences become apparent. The .45 ACP (230gr JHP at 850 fps) delivers significantly higher energy, maintaining 343 ft-lbs at 50 yards compared to the .38 Special's (125gr JHP at 900 fps) 202 ft-lbs. Both calibers demonstrate similar penetration characteristics, with the .45 ACP reaching 12.2-12.3 inches and the .38 Special achieving 11.9-12.1 inches, both near the lower threshold of FBI-recommended penetration depths. The recoil comparison strongly favors the .38 Special, generating 2.19 ft-lbs of recoil energy versus the .45 ACP's 6.06 ft-lbs. Cost favors the .45 ACP, the cheaper of the two per round in the price tables below. Remember that performance varies considerably with different ammunition selections and firearm platforms, so these figures represent typical defensive loadings rather than definitive performance benchmarks.
Ammunition Parameters
.38 Special Parameters (Self-Defense Load)
.45 ACP Parameters (Self-Defense Load)
.38 Special vs .45 ACP Ballistics Chart
Comparing bullet drop at various ranges between .38 Special and .45 ACP.
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.38 Special vs .45 ACP Energy Comparison
Comparing the muzzle energy and energy retention at various distances between .38 Special and .45 ACP.
.38 Special vs .45 ACP Bullet Penetration
Comparison of estimated penetration depth in 10% ballistic gel between .38 Special and .45 ACP at self-defense distances.
Self-Defense Ammunition Penetration
Notes:
- FBI standard for optimal penetration is 12-18 inches in 10% ballistics gel
- These penetration figures come from a model of sectional density, velocity and expansion, not from gel tests. Use them to compare the two calibers, not as a measured result.
- Actual results may vary depending on clothing barriers and other factors
.38 Special vs .45 ACP Recoil
Comparing recoil energy and impulse between .38 Special and .45 ACP.
.38 Special Recoil (Self-Defense Load)
.45 ACP 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
.38 Special vs .45 ACP Velocity
Velocity decay from muzzle to 50 yards for .38 Special and .45 ACP.
.38 Special vs .45 ACP Average Cost
Comparing cost per round and training affordability between .38 Special and .45 ACP.
Cheapest .38 Special Deals
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