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Cartridge comparison

.380 Long vs 9mm Largo

.380 Long and 9mm Largo are both in the reference; see the full spec comparison below.

ToolOverlay .380 Long and 9mm Largo trajectories with real loads in Ballistic Compare

Side by side

.380 Long9mm Largo
TypeRevolverPistol
Introduced18701903
Bullet diameter0.3602″0.3551″
Case length0.9567″0.9055″
Max pressure11,168 psi34,084 psi
Recoil5.8–6.3 ft·lb4–6.5 ft·lb
Effective range50 yd50 yd
SAAMINot SAAMI standardizedNot SAAMI standardized
CIPCIP standardizedNot standardized
ObsoleteObsoleteObsolete

Highlighted cells hold the clear edge where both sides have a number. Every figure is a range maximum from the reference; typical loads run lower.

Case profiles, to scale

Drawn to the same scale, so the proportions are true. Physical size varies with your screen.

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