|Place of origin||United States|
|Manufacturer||Savage Arms Company|
|Case type||Rimless, bottleneck|
|Bullet diameter||.257 in (6.5 mm)|
|Neck diameter||.286 in (7.3 mm)|
|Shoulder diameter||.414 in (10.5 mm)|
|Base diameter||.469 in (11.9 mm)|
|Rim diameter||.473 in (12.0 mm)|
|Case length||1.912 in (48.6 mm)|
|Overall length||2.515 in (63.9 mm)|
|Primer type||Large rifle|
|Maximum CUP||45000 CUP|
|Test barrel length: 24"
Source(s): Accurate Powder 
The .250-3000 Savage is a rifle cartridge created by Charles Newton in 1915 and is also known as the .250 Savage. The name comes from its original manufacturer, Savage Arms and the fact that the original load achieved a 3000 ft/s (910 m/s) velocity with an 87 grain (5.6 g) bullet.
Charles Newton designed the 250-3000 Savage case to fit the popular Savage Model 99 lever-action rifle. Newton recommended loading 100 grain (6.5 g) bullets at 2800 ft/s (850 m/s); but Savage Arms reduced bullet weight to obtain velocity of 3000 ft/s (910 m/s), making it the first American cartridge capable of that velocity. Achieving that velocity may have been the reason for the choice of the light-for-caliber 87 grain (5.6 g) bullet. Newton questioned if the publicity advantages of velocity compensated for reduced penetration of the lighter bullet in larger game animals.
The cartridge has a pressure limit of 45,000 CUP set by SAAMI. It lacks the power of the bigger .25-06 Remington but provides less noise and less recoil. Performance is very close to the .257 Roberts. Arguably it is a better overall cartridge for hunting than the more popular .30-30, but in recent years has lost ground to the .257 Roberts and flatter-shooting 6mm cartridges such as the .243 Winchester.
Currently there are very few new firearms being made in .250 Savage. It is an excellent cartridge with moderate recoil for hunting small game on up to deer-sized game.
Some varmint hunters use the improved version of this cartridge, known as the .250 Ackley or .250 Improved or .250 Ackley Improved as a dual-purpose intermediate-range cartridge. The .250 Ackley is the same basic cartridge with a steeper shoulder and with the sides blown-out or straightened to increase powder space. This provides a velocity improvement of more than 250 ft/s (76.2 m/s) over standard factory loads.
- ".250-3000 Savage" data from Accurate Powder
- "The .250-3000 Savage" by Chuck Hawks
- Barnes, Frank C. (1997) . McPherson, M.L., ed. Cartridges of the World (8th ed.). DBI Books. pp. 34, 91. ISBN 0-87349-178-5.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
- Towsley, Bruce M. American Rifleman (July 2011) pp.54-57
- "The .250-3000 Ackley Improved" by Chuck Hawks
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