Kimber Mountain Ascent Mojave 280AI 24-inch Rifle
About this product
What is the Kimber Mountain Ascent Mojave 280AI 24-inch Rifle?
The Kimber Mountain Ascent Mojave 280AI 24-inch Rifle is a purpose-built lightweight precision bolt-action hunting rifle chambered in .280 Ackley Improved for long-range field performance. Engineered with an aluminum bedding block and hybrid composite stock, this 6.10 lb platform maintains sub-MOA accuracy while remaining manageable during extended backcountry carries. Its 24-inch threaded stainless steel barrel accommodates suppressors or muzzle devices without compromising the 45.25-inch overall length balance necessary for ethical shots at 400+ yards.
What is the Kimber Mountain Ascent Mojave 280AI 24-inch Rifle used for?
This rifle is optimized for high-altitude hunting and precision long-range shooting where every ounce and inch matters. The .280 Ackley Improved cartridge delivers flatter trajectories than standard .30-06 loads while maintaining energy retention beyond 500 yards, making it ideal for elk, mule deer, or mountain goats in steep terrain. With its 1:9 twist rate stabilizing 160-175 grain hunting bullets, you'll achieve consistent terminal performance without carrying a heavier magnum-caliber system.
How does the Kimber Mountain Ascent Mojave 280AI 24-inch Rifle compare to the Stevens 334 Rifle?
The Mountain Ascent significantly outperforms the Stevens 334 in both precision components and weight reduction, costing $900 more for those upgrades. Where the Stevens 334 .308 Win uses a 20-inch carbon steel barrel and basic synthetic stock weighing 7.3 lbs, the Kimber employs a match-grade stainless barrel, aluminum bedding block, and advanced composite stock shaving over 1 pound while improving accuracy potential. For hunters needing sub-MOA reliability in brutal conditions, the Kimber justifies its price; for budget-conscious shooters staying under 300 yards, the Stevens 334 remains adequate.
What does it weigh and what are the dimensions?
The rifle weighs 6.10 lbs (98 oz) unloaded with an overall length of 45.25 inches and 24-inch barrel length. This puts it nearly 2 lbs lighter than most wood-stocked hunting rifles while maintaining a full-length barrel for velocity retention—critical for the .280 AI's ballistic advantage. The hollow bolt knob and fluted bolt body contribute to the weight savings without sacrificing rigidity, and the 4+1 internal magazine capacity keeps the profile slim for pack carrying.
Who is this NOT for?
This rifle isn't suitable for beginners or budget-focused shooters who won't utilize its long-range capabilities. The .280 Ackley Improved ammunition costs $2.50-3.75 per round compared to $1.20 for .308 Winchester, requiring handloading to realize its full potential economically. Additionally, the fixed stock lacks adjustability for shooters requiring precise length-of-pull customization, unlike some competing models with modular chassis systems.
What's in the box?
You receive the rifle with mounted 7/16×28 thread protector, one 5/8×24 thread adapter for standard muzzle devices, a basic nylon sling, and a premium nylon rifle case rated for 1000D Cordura abrasion resistance. Notably absent are optic mounting hardware or additional magazines—plan to invest $150-400 for a quality scope mount and rings before firing. The factory trigger comes preset to 3.5 lbs pull weight, which most experienced shooters will find ideal for field use.
Is the Kimber Mountain Ascent Mojave 280AI 24-inch Rifle worth it at $1629.99?
At $1629.99, this rifle delivers exceptional value for dedicated mountain hunters and long-range precision shooters who need lightweight reliability. The combination of match-grade barrel, premium stock materials, and Kimber's attention to detail compares favorably to custom builds costing $800+ more. For those who've struggled with heavier rifles like the Stevens 334 in steep country, the 1.2 lb weight reduction alone justifies the investment when every ounce counts at 10,000 feet elevation.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 6.10 lbs — 1.2 lbs lighter than Stevens 334 with longer barrel
- 1:9 twist stabilizes 175 grain bullets at 2800 fps muzzle velocity
- Aluminum bedding block reduces action shift to under 0.0005 inches under recoil
- Includes 5/8×24 adapter for suppressor compatibility without gunsmithing
Trade-offs
- .280 AI ammunition costs $2.75 per round average vs $1.20 for .308 Win
- Fixed stock lacks adjustability — requires $250 aftermarket upgrade for LOP changes
- No iron sights included — adds $200-600 for optic system before use
Expert review
Key attributes
| upc | 669278309262 |
| manufacturer | Kimber |
| manufacturer part number | 3000926 |
| action | Bolt Action |
| atf type | RIFLE |
| barrel length | 24" |
| caliber/gauge | .280 Ackley Improved |
| capacity | 4 + 1 |
| package height | 4.0 |
| package width | 11.25 |
| product type | Rifle |
| safety | 3 Position |
| shipping weight | 11.65 |
| sights | No Sights |
Frequently asked questions
- Is it compatible with standard .280 Remington ammunition?
- No, it exclusively chambers .280 Ackley Improved cartridges, which fireform from standard .280 Remington brass but require specific dies. Attempting to fire .280 Remington ammunition may cause dangerous pressure issues due to the improved chamber's sharper shoulder angle.
- Does it fit standard AR-10 pattern muzzle devices?
- Yes, with the included 5/8×24 adapter, it accepts most common .30 caliber muzzle brakes or suppressors. The native 7/16×28 threads are proprietary to Kimber, but the adapter adds only 0.5 ounces and maintains concentricity within 0.001 inches.
- How long does shipping take to Montana?
- FFL shipments typically require 3-5 business days processing plus 2-3 days transit via FedEx Priority. All rifles ship from our Idaho warehouse with next-day processing for orders placed before 2 PM Mountain Time.
- Can I return it if it doesn't group well?
- Returns are accepted within 30 days for unfired rifles only; once fired, we consider it used and only accept returns for manufacturing defects. Kimber guarantees 1 MOA accuracy with premium ammunition, which we verify with 3-shot groups at 100 yards before approving returns.