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Cartridge comparison

.30-01 vs .303 Magnum

.30-01 and .303 Magnum are both in the reference; see the full spec comparison below.

ToolOverlay .30-01 and .303 Magnum trajectories with real loads in Ballistic Compare

Side by side

.30-01.303 Magnum
TypeRifleRifle
Introduced19011919
Bullet diameter0.308″0.312″
Case length2.54″2.35″
Max pressure31,900 psi48,000 psi
Recoil22.3 ft·lb18–25 ft·lb
Effective range500 yd1000 yd
SAAMINot SAAMI standardizedNot SAAMI standardized
CIPNot 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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