The 300 Savage cartridge features a standard bullet diameter of 0.308 inches (7.8 mm) and a maximum case length of 1.871 inches (47.5 mm).
Its maximum overall cartridge length (COAL) is standardized at 2.600 inches (66.0 mm) to function reliably within compact rifle actions.
The lower anatomy incorporates a rim diameter of 0.473 inches (12.0 mm) and a base diameter of 0.471 inches (12.0 mm).
Moving upward, the case features a shoulder diameter of 0.446 inches (11.3 mm) and a neck diameter of 0.339 inches (8.6 mm).
Published specifications represent nominal blueprints, maximum design envelopes, or allowable manufacturing tolerances regulated by SAAMI.
Evaluating these fundamental geometric parameters is vital for assessing internal case volume, safe pressure thresholds, and reloading components.
300 Savage Dimensions
| Dimension | Inches | Millimeters | Specification Type | Source | Notes |
| Bullet Diameter | 0.308 in | 7.8 mm | Nominal | SAAMI | Standard .30 caliber projectile standard |
| Case Length | 1.871 in | 47.5 mm | Maximum | SAAMI | Maximum allowable length from case head to mouth |
| Overall Cartridge Length | 2.600 in | 66.0 mm | Maximum (COAL) | SAAMI | Engineered for compact lever-action and short actions |
| Rim Diameter | 0.473 in | 12.0 mm | Maximum | SAAMI | Standard .473 inch family rim size |
| Base Diameter | 0.471 in | 12.0 mm | Maximum | SAAMI | Body diameter just forward of the extractor groove |
| Shoulder Diameter | 0.446 in | 11.3 mm | Nominal / Max | SAAMI | Measured at the junction of the shoulder and body |
| Neck Diameter | 0.339 in | 8.6 mm | Maximum | SAAMI | Dimension at the case neck for loaded round clearance |
| Shoulder Angle | 30.0° | 30.0° | Nominal | SAAMI | Distinctive sharp 30-degree shoulder geometry |
| Case Capacity | 52.5 gr H2O | 3.40 ml | Measured / Nominal Usable | SAAMI / Industry | Usable water capacity to the mouth |
| Maximum Pressure | 47,000 psi | 320 MPa | Maximum Average Pressure (MAP) | SAAMI | Upper pressure safety threshold for legacy actions |
Understanding The 300 Savage Dimensions
Analyzing the 300 Savage cartridge dimensions requires looking at how its compact geometry was engineered to squeeze .30-caliber performance into restricted receiver lengths. The bullet diameter measures 0.308 inches, providing access to a broad selection of standard .30-caliber projectiles.The case length of 1.871 inches and overall cartridge length (COAL) of 2.600 inches were deliberately shortened compared to traditional long-action cartridges to cycle smoothly in traditional rotary-magazine lever actions and short-action rifles.
The lower case uses a standard rim diameter of 0.473 inches and a base diameter of 0.471 inches, matching standard bolt faces.A defining feature of the 300 Savage case is its sharp 30-degree shoulder angle and very short neck length, which help maximize powder volume within the truncated body.The neck diameter (0.339 inches) provides dependable neck tension when properly sized.
300 Savage Dimensions In Inches And Millimeters
To accommodate reloaders and ballisticians utilizing both imperial and metric systems, core 300 savage dimensions are presented below.
| Parameter | Inches (in) | Millimeters (mm) |
| Bullet Diameter | 0.308 in | 7.8 mm |
| Case Length (Max) | 1.871 in | 47.5 mm |
| Cartridge Overall Length (Max) | 2.600 in | 66.0 mm |
| Base Diameter | 0.471 in | 12.0 mm |
| Rim Diameter | 0.473 in | 12.0 mm |
| Shoulder Diameter | 0.446 in | 11.3 mm |
| Neck Diameter | 0.339 in | 8.6 mm |
300 Savage Case Dimensions
The 300 savage case dimensions reflect a short, efficient design derived from the .250 Savage parent case.Featuring a maximum case length of 1.871 inches and a base diameter of 0.471 inches, the case body tapers slightly upward into a pronounced 30-degree shoulder.
Because of the short neck design (.221 inches), handloaders must pay careful attention to bullet seating depth to ensure the projectile base does not intrude past the neck-shoulder junction. SAAMI specifications establish strict maximum boundaries, while manufactured brass incorporates tight tolerances to maintain proper chamber fit.
300 Savage Bullet Diameter
The official 300 savage bullet diameter is standardized at 0.308 inches (7.8 mm). It is essential to separate bullet diameter from internal bore and groove dimensions: the bore diameter defines the elevated lands of the rifling, whereas the groove diameter spans the deepest valleys.
The standard 0.308-inch projectile diameter allows the cartridge to share bullet inventories with mainstream calibers like the .308 Winchester and .30-06 Springfield, though overall length restrictions dictate which specific profiles work best.
300 Savage Overall Cartridge Length
The published maximum overall cartridge length (COAL) for the 300 savage is 2.600 inches (66.0 mm). This dimension is critical because it governs magazine and action compatibility.
While factory ammunition is strictly loaded to clear traditional rifle magazine windows, handloaders seating long, heavy bullets must often monitor overall length carefully to prevent jamming bullets into the rifling lands or exceeding maximum magazine dimensions.
300 Savage Case Capacity
The 300 savage case capacity is reliably documented at approximately 52.5 grains of water (3.40 ml) when filled to the mouth. This internal volume is remarkably efficient for a short-action casing, sitting only slightly behind the capacity of a standard .308 Winchester.
Because brass manufacturing variances and lot differences can alter internal volume, nominal published capacity serves as a baseline rather than an absolute rule. Reloaders should adjust powder charges accordingly when switching brass brands.
300 Savage Dimensions vs Similar Cartridges
Comparing the 300 savage dimensions with other classic short-action and medium rifle cartridges highlights its unique spatial profile.
| Cartridge | Bullet Diameter | Case Length | Overall Length | Rim / Base Diameter | Case Capacity | Source |
| 300 Savage | 0.308 in | 1.871 in | 2.600 in | Rim: 0.473 in / Base: 0.471 in | 52.5 gr H2O | SAAMI |
| 308 Winchester | 0.308 in | 2.015 in | 2.810 in | Rim / Base: 0.473 in | ~56.0 gr H2O | SAAMI |
| 30-06 Springfield | 0.308 in | 2.494 in | 3.340 in | Rim / Base: 0.473 in | ~68.0 gr H2O | SAAMI |
| 30-30 Winchester | 0.308 in | 2.039 in | 2.550 in | Rim: 0.506 in / Base: 0.422 in | ~52.0 gr H2O | SAAMI |
300 Savage vs 308 Winchester Dimensions
When evaluating the 300 savage against the ubiquitous .308 Winchester, the structural evolution is clear. The .308 Winchester was heavily inspired by the 300 Savage concept but lengthened the case body to 2.015 inches and lengthened the overall cartridge length to 2.810 inches.
While both share a identical 0.473-inch rim diameter and a 0.308-inch bullet diameter, the .308 Winchester provides a longer neck and greater case capacity (~56 grains vs. 52.5 grains of water), allowing it to handle higher SAAMI pressure limits (62,000 psi vs. 47,000 psi). Dimensional proximity does not make their ammunition interchangeable in legacy rifles.
300 Savage Chamber And Cartridge Dimensions
Chamber dimensions for the 300 savage are engineered to support reliable feeding and extraction while maintaining safe headspacing off the 30-degree shoulder datum.
The chamber throat features a specific leade designed to transition standard-weight hunting projectiles smoothly into the rifling. Tight tolerances between chamber walls and maximum cartridge dimensions prevent excessive brass stretching during the firing sequence.
300 Savage Bullet Weight And Dimensions
The 300 savage accommodates a versatile range of bullet weights, historically centered around 150-grain and 180-grain hunting configurations, alongside lighter 110-grain to 125-grain options.
While projectile weight does not change standardized case dimensions, physical bullet length, ogive curvature, and seating depth dictate how deep the projectile extends into the short neck, making proper cartridge assembly critical for reliable operation.
Why 300 Savage Dimensions Matter
Precise cartographic measurements govern every aspect of 300 savage functionality:
- Chamber Fit & Headspacing: Correct shoulder dimensions ensure safe headspace positioning upon chambering.
- Magazine Compatibility: Adhering to the 2.600-inch COAL guarantees smooth cycling in traditional lever-action and short-action setups.
- Pressure Limits: Strict adherence to case volume keeps operational pressures at or below the 47,000 psi SAAMI ceiling.
- Reloading Precision: Understanding neck length and body taper prevents over-sizing errors and case separation.
Manufacturer Specifications vs Independent Measurements
Official dimensions for the 300 savage are standardized by SAAMI, establishing strict maximum envelope limits and a Maximum Average Pressure threshold of 47,000 psi (or 46,000 CUP).
While factory ammunition adheres closely to these official blueprints, independent measurements of older vintage brass or fired cases can exhibit minor deviations due to chamber wear or historical manufacturing variations. SAAMI specifications remain the primary baseline for accurate cartridge dimensions.
Common Questions
What are the dimensions of 300 Savage?
The 300 savage features a bullet diameter of 0.308 inches, a maximum case length of 1.871 inches, a maximum overall cartridge length of 2.600 inches, a base diameter of 0.471 inches, and a rim diameter of 0.473 inches.
What is the 300 Savage case length?
The maximum SAAMI case length is 1.871 inches (47.5 mm).
What is the 300 Savage overall length?
The maximum overall cartridge length (COAL) is 2.600 inches (66.0 mm).
What is the 300 Savage bullet diameter?
The standardized bullet diameter is 0.308 inches (7.8 mm).
What is the 300 Savage rim diameter?
The rim diameter is 0.473 inches (12.0 mm).
What is the 300 Savage base diameter?
The maximum base diameter is 0.471 inches (12.0 mm).
What is the 300 Savage case diameter?
The base diameter measures 0.471 inches maximum, with a shoulder diameter of 0.446 inches.
What is the 300 Savage case capacity?
Usable case capacity is approximately 52.5 grains of water.
How does 300 Savage compare with 308 Winchester dimensions?
While both share a 0.308-inch bullet diameter and 0.473-inch rim, the 300 savage has a shorter case length (1.871 in vs. 2.015 in) and lower maximum pressure limits.
What is the maximum overall length of 300 Savage?
The maximum SAAMI overall length is 2.600 inches.
What is the 300 Savage maximum pressure?
The SAAMI Maximum Average Pressure (MAP) limit is 47,000 psi.