The Remington 700 Ultimate Muzzleloader is a bolt-action muzzleloader chambered in .50 caliber, built on the familiar 700 platform with a U.M.L (Ultimate MuzzleLoader) ignition system. The 26-inch stainless steel fluted barrel is drilled and tapped for scope mounting. OAL is 47 inches and it ships new in box. 
 

Key Specifications 

• Brand: Remington Firearms (New) 
• Model: 700 Ultimate Muzzleloader 
• Type: Muzzleloaders 
• Caliber: .50 
• Barrel Length: 26 inches 
• Capacity: 1 round 
• Condition: New in Box 
• Finish Per Color: Wood Laminate 
• Action Type: Bolt Action 
• Overall Length (OAL): 47 inches 
• Hand Orientation: Right 
• Sights Type: Drilled & Tapped 
• Barrel Finish: Satin Stainless 
• Gun Platform Compatibility: Rem 700 Style 
• Ignition System: U.M.L System 
• Safety Mechanism: Two-position safety 
• Barrel Description: Stainless Steel Fluted 
• Stock Material/Finish: Laminate/Satin Black 
   

Features 

 
The U.M.L ignition system is designed for consistent ignition across varying weather conditions. The fluted barrel cuts weight and helps manage heat during extended range sessions. 
 
The laminate stock pairs with satin stainless metalwork throughout. Drilled and tapped receiver gives flexibility on optics without additional bases. 
 
Two-position safety is straightforward — quick to engage or disengage without losing your grip on the rifle.

The 700 UML draws mostly favorable comments, especially for accuracy and field reliability. Users who are familiar with the 700 action adapt to it quickly, and the ignition system gets credit for performing in cold and wet conditions where other muzzleloaders can be finicky.

Ease of operation comes up often as a positive — the bolt-action format feels natural to shooters coming from centerfire rifles, and loading is considered less awkward than break-action designs.

On the negative side, weight is the recurring complaint during long hunts. Price is another point of friction; most users concede the quality justifies it, but some find it steep against alternatives. Cleaning and maintenance require consistent attention, which a few users note is more involved than they expected from a bolt-action design.