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Cartridge comparison

.475 Turnbull vs .577/450 Martini-Henry

.475 Turnbull and .577/450 Martini-Henry are both in the reference; see the full spec comparison below.

ToolOverlay .475 Turnbull and .577/450 Martini-Henry trajectories with real loads in Ballistic Compare

Side by side

.475 Turnbull.577/450 Martini-Henry
TypeRifleRifle
Introduced20071871
Bullet diameter0.475″0.465″
Case length2.2″2.326″
Max pressure42,000 psi25,382 psi
Recoil62.3–64.8 ft·lb25–38 ft·lb
Effective range250 yd400 yd
SAAMINot SAAMI standardizedNot SAAMI standardized
CIPNot standardizedCIP 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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