Opening soon. Call us (774) 625-1252

Skip to content
Lindcott Armory Lindcott Armory
Sell Sell

Cartridge comparison

12.7x55mm vs .50-100 Winchester

12.7x55mm and .50-100 Winchester are both in the reference; see the full spec comparison below.

ToolOverlay 12.7x55mm and .50-100 Winchester trajectories with real loads in Ballistic Compare

Side by side

12.7x55mm.50-100 Winchester
TypeRifleRifle
Introduced20021895
Bullet diameter0.5122″0.512″
Case length2.1618″2.4″
Max pressure61,000 psi22,000 psi
Recoil18.3–18.9 ft·lb30.9–45.2 ft·lb
Effective range150 yd150 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.

Selling a gun

Selling a gun or a collection?

Start here