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THE CARTRIDGE LIBRARY · SPORTING & MATCH RIFLE

.260 Remington

A 6.5mm-class cartridge in the .308 Winchester case family. It combines a short-action case with a range of 6.5mm target and hunting bullets.

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

.260 Remington · Studio brass dimensional referenceDimensions in inches and millimeters. Overall length minimum: 2.530 in, 64.262 mm; Overall length maximum: 2.800 in, 71.120 mm; Case length maximum: 2.035 in, 51.689 mm; Rim diameter maximum: 0.473 in, 12.014 mm; Bullet maximum: 0.2645 in, 6.718 mmOVERALL · MIN–MAX2.530–2.800 in64.262–71.120 mmCASE LENGTH · MAX2.035 in51.689 mmBULLET Ø · MAX0.2645 in6.718 mmRIM Ø · MAX0.473 in12.014 mm
Published cartridge dimensions · SAAMI drawing ↗
Read the dimensions
Overall · min–max
2.530–2.800 in
64.262–71.120 mm
Case length · max
2.035 in
51.689 mm
Bullet maximum
0.2645 in
6.718 mm
Rim diameter · max
0.473 in
12.014 mm

Know the exact name

At a glance

Cartridge family
Sporting & match rifle
Bullet specification
0.2645 in / 6.718 mmBullet maximum
Factory examples
2 loadsSelected, sourced examples below
Weight in cited examples
129–130 grGrains measure mass, not powder charge

.260 Remington is identified by its complete cartridge designation. The resource-table alternative is 260 Rem. A caliber number, bullet diameter, or family resemblance on its own does not identify ammunition compatibility.

.260 Remington, 6.5 Creedmoor, and 6.5×55 are separate cases even when they use the same nominal bullet diameter.

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

Origins & evolution

Background & development

The .260 Remington formalized a wildcat idea that had circulated for decades: a 6.5 mm cartridge in the .308 Winchester case family. Sierra points to Ken Waters’ .263 Express description as early as 1962. Later versions of the 6.5-.308 idea appeared under other names, so crediting one person with the first example would oversimplify its development.

Competitive shooting gave that old idea renewed commercial momentum in the 1990s. High-power and silhouette shooters were already exploring the advantages of streamlined 6.5 mm bullets, and prominent shooters and writers drew attention to the performance available from the compact case. Remington standardized the design as the .260 Remington. Its history predates the more recent popularity of the 6.5 Creedmoor and PRC families: it represents an earlier factory-supported attempt to combine 6.5 mm projectile performance with a short-action rifle.

Historical sources: Sierra: .260 Remington cartridge history ↗

Construction changes the story

Loads, variations & specialty offerings

Hunting construction

Soft-point, bonded, partitioned, and monolithic expanding bullets are designed differently. Their intended impact-velocity ranges and use cases come from the bullet or ammunition manufacturer.

Match construction

Open-tip match and tipped match bullets prioritize consistency and aerodynamics. A match designation does not by itself mean the projectile was designed for hunting expansion.

Specialty offerings

Lead-free, reduced-recoil, and premium long-range products are separate load designs when offered. Compare the exact SKU, bullet weight, test barrel, and intended role rather than relying on a cartridge-wide average.

In the cited .260 Remington examples, bullet weights are 129, 130 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 2 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
Hornady8552129 gr
8.36 g
SST®2,930 fps
893 m/s
Not stated here; see sourceHornady · PDF p. 184 ↗
Hornady8553130 gr
8.42 g
ELD® Match2,840 fps
866 m/s
Not stated here; see sourceHornady · PDF p. 184 ↗

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

.260 Remington: factory velocity downrange

Distance (yd): velocity (fps). Original source units. Intermediate estimates are excluded from this table.
Exact loadSourcePublished points
129 gr Hornady SST®Hornady0: 2930; 100: 2737; 200: 2552; 300: 2375; 400: 2204; 500: 2041
130 gr Hornady ELD® MatchHornady0: 2840; 100: 2674; 200: 2515; 300: 2361; 400: 2212; 500: 2069

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 .260 Remington?

A 6.5mm-class cartridge in the .308 Winchester case family. It combines a short-action case with a range of 6.5mm target and hunting bullets.

What diameter does .260 Remington use?

The cited dimensional standard lists 0.2645 inches (6.718 mm), bullet maximum. This drawing convention is different from a casual caliber nickname.

Are similarly named cartridges interchangeable?

.260 Remington, 6.5 Creedmoor, and 6.5×55 are separate cases even when they use the same nominal bullet diameter.

Are the graph values measured or estimated?

The downrange view uses the exact manufacturer catalog records shown in the source table. Dashed connectors and intermediate inspector values use linear interpolation between the displayed source points. Calculated energy uses the listed 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

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. 97 ↗
  2. Sierra: .260 Remington cartridge background ↗
  3. Hornady · PDF p. 184 ↗

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.