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THE CARTRIDGE LIBRARY · REVOLVER & LEVER-ACTION RIFLE

.44 Remington Magnum

A rimmed magnum revolver cartridge that also appears in sporting carbines. Handgun and rifle velocities must therefore be read with their actual test-barrel lengths.

2A Ledger reference desk · Sources checked October 18, 2026

.44 Remington Magnum · Studio brass dimensional referenceDimensions in inches and millimeters. Overall length minimum: 1.535 in, 38.989 mm; Overall length maximum: 1.610 in, 40.894 mm; Case length maximum: 1.285 in, 32.639 mm; Rim diameter maximum: 0.514 in, 13.056 mm; Lead bullet max: 0.432 in, 10.973 mmOVERALL · MIN–MAX1.535–1.610 in38.989–40.894 mmCASE LENGTH · MAX1.285 in32.639 mmBULLET Ø · MAX0.432 in10.973 mmRIM Ø · MAX0.514 in13.056 mm
Published cartridge dimensions · SAAMI drawing ↗
Read the dimensions
Overall · min–max
1.535–1.610 in
38.989–40.894 mm
Case length · max
1.285 in
32.639 mm
Lead bullet max
0.432 in
10.973 mm
Rim diameter · max
0.514 in
13.056 mm

Know the exact name

At a glance

Cartridge family
Revolver & lever-action rifle
Bullet specification
0.4320 in / 10.973 mmLead bullet max
Factory examples
16 loadsSelected, sourced examples below
Weight in cited examples
180–300 grGrains measure mass, not powder charge

.44 Remington Magnum is identified by its complete cartridge designation. The resource-table alternative is 44 Rem Mag. A caliber number, bullet diameter, or family resemblance on its own does not identify ammunition compatibility.

.44 Special and .44 Magnum retain separate specifications. Firearm-specific authorization governs the use of shorter related cartridges.

Dimensions: open the exact dimensional drawing ↗. The displayed number is lead bullet max, rather than an assertion that every manufactured projectile or barrel has this exact diameter.

Origins & evolution

Background & development

The .44 Magnum grew from Elmer Keith’s work with the .44 Special and the effort to make that level of performance available in a purpose-built commercial revolver cartridge. Sierra dates its introduction to December 1955. The new case was longer than the .44 Special’s, and the cartridge made its debut in Smith & Wesson’s large-frame revolver, followed closely by Ruger’s .44 Magnum Blackhawk.

The design quickly acquired a reputation that reached far beyond the hunting field. It later appeared in other revolvers, automatic pistols and rifles, while handgun hunters and metallic-silhouette competitors developed practical uses for its performance. Newer cartridges eventually exceeded it in power, but that did not erase the .44 Magnum’s influence. Its lasting position comes from the meeting of Keith’s earlier experimentation, commercial ammunition development and firearms built around a distinct magnum cartridge rather than an uprated .44 Special loading.

Historical sources: Sierra: .44 Remington Magnum cartridge history ↗

Construction changes the story

Loads, variations & specialty offerings

Practice & target

Full-metal-jacket, plated, lead, and wadcutter bullets describe different constructions. Grain weight is projectile mass; it does not state a powder charge or guarantee recoil.

Expanding factory bullets

JHP, XTP, FTX, HST, and similar product names refer to particular designs. Muzzle energy alone does not show expansion, penetration, or reliability in a particular firearm.

Specialty load families

Reduced-recoil, subsonic, monolithic, and heavier-bullet offerings are product-specific. A +P marking is a pressure category where standardized, not simply a heavier bullet. Follow the maker’s exact product and firearm guidance.

In the cited .44 Remington Magnum examples, bullet weights are 180, 200, 225, 230, 235, 240, 280, 300 grains. These are the weights actually present in this source selection, not a claim that every possible loading is listed.

Bullet construction background: Hornady: anatomy of a bullet ↗. Exact product descriptions and velocities are cited in the factory table.

From the factory catalog

Compare all 16 cited factory load records
Factory catalog examples, not purchase recommendations. V / -V denotes a vented test barrel where shown by the source. Unstated test lengths have not been inferred.
Maker / productBullet massPublished constructionMuzzle velocityTest barrelSource
FederalC44B180 gr
11.66 g
JHP1,460 fps
445 m/s
4-V inFederal · PDF p. 60 ↗
Hornady9080200 gr
12.96 g
XTP®1,500 fps
457 m/s
7½ V inHornady · PDF p. 191 ↗
Hornady9083200 gr
12.96 g
MonoFlex®1,475 fps
450 m/s
7½ V inHornady · PDF p. 191 ↗
FederalP44XB1225 gr
14.58 g
BARNES EXPANDER1,280 fps
390 m/s
6-V inFederal · PDF p. 60 ↗
Hornady92782225 gr
14.58 g
FTX®1,410 fps
430 m/s
7½ V inHornady · PDF p. 191 ↗
FederalP44HST1S230 gr
14.90 g
HST1,085 fps
331 m/s
Not stated here; see sourceFederal · PDF p. 60 ↗
FederalP44TA1235 gr
15.23 g
TERMINAL ASCENT1,380 fps
421 m/s
6 inFederal · PDF p. 60 ↗
FederalAE44A240 gr
15.55 g
JHP1,230 fps
375 m/s
4-V inFederal · PDF p. 61 ↗
FederalC44A240 gr
15.55 g
JHP1,230 fps
375 m/s
4-V inFederal · PDF p. 60 ↗
FederalF44FS1240 gr
15.55 g
FUSION SP1,290 fps
393 m/s
4-V inFederal · PDF p. 61 ↗
FederalP44HS1240 gr
15.55 g
HYDRA-SHOK1,210 fps
369 m/s
4-V inFederal · PDF p. 60 ↗
Hornady9085240 gr
15.55 g
XTP®1,350 fps
411 m/s
7½ V inHornady · PDF p. 191 ↗
Hornady90868240 gr
15.55 g
DGH1,620 fps
494 m/s
7½ V inHornady · PDF p. 191 ↗
FederalP44SA280 gr
18.14 g
SWIFT A-FRAME1,170 fps
357 m/s
6-V inFederal · PDF p. 60 ↗
FederalP44SHC1300 gr
19.44 g
SOLID CORE1,150 fps
351 m/s
6.5-V inFederal · PDF p. 60 ↗
Hornady9088300 gr
19.44 g
XTP®1,150 fps
351 m/s
7½ V inHornady · PDF p. 191 ↗

Explore the published data

Ballistics you can inspect

Select a legend entry to add or remove its line. Hover or tap a plotted point, or use the position slider. With the graph focused, arrow keys move the inspector. Solid dots identify source points; dashed connectors show estimates between them. Load construction, pressure category, and test setup can differ even at the same grain weight.

Read the original values as accessible tables

.44 Remington Magnum: velocity by barrel length

Barrel length (in): velocity (fps). Source points and stated unit conversions; intermediate estimates are excluded.
Exact loadSource / publisherPublished points
Cor Bon 165 gr. JHPBBTI2: 952; 3: 1,015; 4: 1,150; 5: 1,270; 6: 1,321; 7: 1,385; 8: 1,433; 9: 1,438; 10: 1,501; 11: 1,497; 12: 1,514; 13: 1,549; 14: 1,541; 15: 1,564; 16: 1,552; 17: 1,590; 18: 1,558
Cor Bon 225 gr. DPXBBTI2: 951; 3: 1,095; 4: 1,250; 5: 1,301; 6: 1,320; 7: 1,385; 8: 1,387; 9: 1,447; 10: 1,467; 11: 1,472; 12: 1,474; 13: 1,495; 14: 1,506; 15: 1,550; 16: 1,532; 17: 1,563; 18: 1,540
Federal 240 gr. Hydra-Shok JHPBBTI2: 944; 3: 1,095; 4: 1,251; 5: 1,367; 6: 1,380; 7: 1,462; 8: 1,497; 9: 1,535; 10: 1,571; 11: 1,584; 12: 1,579; 13: 1,608; 14: 1,623; 15: 1,645; 16: 1,619; 17: 1,629; 18: 1,643
Speer 200 gr. Gold Dot Short-bbl HPBBTI2: 833; 3: 964; 4: 1,099; 5: 1,170; 6: 1,197; 7: 1,251; 8: 1,282; 9: 1,278; 10: 1,319; 11: 1,315; 12: 1,353; 13: 1,341; 14: 1,358; 15: 1,361; 16: 1,377; 17: 1,354; 18: 1,341

.44 Remington Magnum: factory velocity downrange

Distance (yd): velocity (fps). Source points and stated unit conversions; intermediate estimates are excluded.
Exact loadSource / publisherPublished points
180 gr Federal JHPFederal0: 1,460; 25: 1,340; 50: 1,240; 75: 1,160; 100: 1,090
200 gr Hornady XTP®Hornady0: 1,500; 50: 1,332; 100: 1,194
225 gr Federal BARNES EXPANDERFederal0: 1,280; 25: 1,209; 50: 1,147; 75: 1,096; 100: 1,052
230 gr Federal HSTFederal0: 1,085; 25: 1,046; 50: 1,012; 75: 982; 100: 955
235 gr Federal TERMINAL ASCENTFederal0: 1,380; 25: 1,297; 50: 1,222; 75: 1,158; 100: 1,103
240 gr Federal JHPFederal0: 1,230; 25: 1,169; 50: 1,117; 75: 1,073; 100: 1,035
280 gr Federal SWIFT A-FRAMEFederal0: 1,170; 25: 1,107; 50: 1,056; 75: 1,013; 100: 977
300 gr Federal SOLID COREFederal0: 1,150; 25: 1,100; 50: 1,057; 75: 1,021; 100: 989
200 gr Hornady MonoFlex®Hornady0: 1,475; 50: 1,310; 100: 1,176
225 gr Hornady FTX®Hornady0: 1,410; 50: 1,233; 100: 1,102
240 gr Federal JHPFederal0: 1,230; 25: 1,170; 50: 1,120; 75: 1,070; 100: 1,040
240 gr Federal FUSION SPFederal0: 1,290; 25: 1,221; 50: 1,162; 75: 1,110; 100: 1,067
240 gr Federal HYDRA-SHOKFederal0: 1,210; 25: 1,152; 50: 1,102; 75: 1,060; 100: 1,024
240 gr Hornady XTP®Hornady0: 1,350; 50: 1,230; 100: 1,133
240 gr Hornady DGHHornady0: 1,620; 50: 1,467; 100: 1,330
300 gr Hornady XTP®Hornady0: 1,150; 50: 1,083; 100: 1,030

How to interpret the comparison

Changing bullet weight also often changes bullet design and propellant choice. Two curves are comparisons of the listed products, not a controlled experiment proving that bullet weight alone caused the difference. Catalog downrange points are projections under the maker’s conditions; barrel-study points are recorded observations in the study firearm.

Direct answers

Common questions

What is .44 Remington Magnum?

A rimmed magnum revolver cartridge that also appears in sporting carbines. Handgun and rifle velocities must therefore be read with their actual test-barrel lengths.

What diameter does .44 Remington Magnum use?

The cited dimensional standard lists 0.4320 inches (10.973 mm), lead bullet max. This drawing convention is different from a casual caliber nickname.

Are similarly named cartridges interchangeable?

.44 Special and .44 Magnum retain separate specifications. Firearm-specific authorization governs the use of shorter related cartridges.

Are the graph values measured or estimated?

Factory datasets show manufacturer specifications and any published downrange projections. Chronograph and barrel-study datasets identify recorded measurements and the original test source. Dashed connectors and intermediate inspector values are labeled linear estimates; single source points are not extended into invented curves. Energy is calculated from bullet mass and velocity.

Does higher energy mean the best load?

Energy is calculated from mass and velocity. It does not establish accuracy, expansion, penetration, pattern density, recoil, or suitability for a particular firearm. Use the exact product documentation and firearm manual.

Trace the facts

Sources & methodology

Skives & petals: read the jacket construction →

Compiled by 2A Ledger from the linked standards, manufacturer publications, and identified test records. Checked October 18, 2026. Historical tests and older catalogs retain their original dates; a listing here does not establish current availability.

  1. SAAMI: dimensional drawing · PDF p. 1 ↗
  2. Sierra: .44 Remington Magnum cartridge background ↗
  3. Federal · PDF p. 60 ↗
  4. Hornady · PDF p. 191 ↗
  5. Federal · PDF p. 61 ↗
  6. Ballistics by the Inch: archived measured barrel data (2020 archive) ↗
  7. BBTI: study index and source records ↗

Diameter figures preserve the cited drawing convention. Inch–millimeter conversion uses exactly 25.4 mm per inch. Factory specifications describe the maker’s test setup; your firearm, ammunition lot, temperature, and measuring method can produce different results. This is an educational factory-ammunition reference, not a reloading manual.