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Cartridge comparison

.35 Whelen Ackley Improved vs .400/350 Nitro Express

.35 Whelen Ackley Improved and .400/350 Nitro Express are both in the reference; see the full spec comparison below.

ToolOverlay .35 Whelen Ackley Improved and .400/350 Nitro Express trajectories with real loads in Ballistic Compare

Side by side

.35 Whelen Ackley Improved.400/350 Nitro Express
TypeRifleRifle
Introduced19551899
Bullet diameter0.358″0.3559″
Case length2.4941″2.75″
Max pressure62,000 psi40,611 psi
Recoil31.9–37.6 ft·lb32.3–34.7 ft·lb
Effective range350 yd200 yd
SAAMINot SAAMI standardizedNot SAAMI standardized
CIPNot standardizedCIP standardized
Obsolete—Obsolete

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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