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Cartridge comparison

7.21 Lazzeroni Firebird vs 7mm STW

7.21 Lazzeroni Firebird and 7mm STW are both in the reference; see the full spec comparison below.

ToolOverlay 7.21 Lazzeroni Firebird and 7mm STW trajectories with real loads in Ballistic Compare

Side by side

7.21 Lazzeroni Firebird7mm STW
TypeRifleRifle
Introduced19961979
Bullet diameter0.284″0.284″
Case length2.81″2.85″
Max pressure63,817 psi63,817 psi
Recoil30–42 ft·lb30–42 ft·lb
Effective range800 yd800 yd

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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