The .444 Marlin has a bullet diameter of .429 inches, a case length of 2.225 inches, and a maximum overall cartridge length of approximately 2.55 inches.
.444 Marlin Dimensions and Specifications
Specification
Measurement or Detail
Bullet Diameter
.429 inches (10.9 mm)
Case Length
2.225 inches (56.5 mm)
Maximum Overall Cartridge Length
Approximately 2.55 inches
Case Type
Straight-walled, rimmed
Common Bullet Weights
240 to 300 grains
Muzzle Velocity
Approximately 2,300 to 2,400 fps
Muzzle Energy
Approximately 3,000 to 3,200 ft-lbs
Introduction Year
1964
Typical Hunting Range
Under 200 yards
Common Applications
Deer, elk, and black bear hunting
Rifle Type
Lever-action rifles
.444 Marlin Bullet and Performance Details
Category
Details
240-Grain Bullet
Common jacketed soft-point option
265-Grain Bullet
Common flat-nose bullet option
300-Grain Bullet
Heavier flat-nose bullet option
Bullet Diameter Comparison
Same .429-inch diameter as the .44 Magnum
Case Design
Lengthened case providing greater powder capacity than the .44 Magnum
Feeding Design
Rimmed case suitable for traditional lever-action rifle designs
Velocity Factors
Bullet weight, barrel length, and ammunition load
Energy Factors
Bullet weight and muzzle velocity
.444 Marlin History and Applications
Topic
Details
Historical Background
Introduced in 1964 as a powerful big-bore cartridge for lever-action rifles
Design Purpose
To provide high velocity and energy in a traditional lever-action platform
Cartridge Design
Based on a lengthened .44 Magnum case
Primary Use
Hunting medium to large game
Common Game
Deer, elk, and black bear
Typical Range
Short to moderate ranges, commonly under 200 yards
Note: Velocity, energy, and hunting range figures are approximate and vary by ammunition, bullet weight, barrel length, and conditions.