Description
The Cascade SB is what happens when CVA takes their proven Cascade bolt gun and trims it down for the way a lot of us really hunt. This version pairs an 18 inch #4 contour barrel in 450 Bushmaster with an OD Green stock and Graphite Black Cerakote metalwork, and the whole rifle stays quick to shoulder and easy to swing inside a box blind or up in a stand. The muzzle comes threaded 5/8×24, so if you run a can, this thing was practically built to host one without turning into a pole vault.
Why the Cascade SB Makes Sense in 450 Bushmaster
The 450 Bushmaster is a straight-walled thumper that hits hard on whitetail and hogs without needing a long barrel to do its job, which is exactly why it pairs so well with a short bolt gun like this. The 4140 carbon steel barrel wears a durable Cerakote finish that shrugs off rain and rough treatment, and the flush-fit detachable magazine keeps reloads simple with a 4+1 capacity. The 70 degree bolt throw gives you plenty of clearance under a big scope bell and cycles fast when a follow-up shot matters.
A Stock Built for Real Hunting Weather
CVA's fiberglass-reinforced synthetic stock gets a SoftTouch finish that stays grippy with cold or wet hands, and the length of pull adjusts with a spacer system so you can dial the fit for heavy winter layers or a smaller-framed hunter. A two-piece scope rail comes on the receiver and accepts Picatinny-style rings, so mounting glass is about as painless as it gets. At roughly 6.75 pounds bare, the Cascade SB carries easy, rides shotgun as a fine truck gun, and handles like something purpose-built for close cover instead of a full-size rifle that got cut down as an afterthought.
Key Specifications
- Manufacturer: Connecticut Valley Arms (CVA)
- Model: Cascade SB
- Manufacturer Part Number: CR3905SB
- UPC: 043125439058
- Caliber: 450 Bushmaster
- Action: Bolt action, 70 degree bolt throw
- Capacity: 4+1, flush-fit detachable magazine
- Barrel Length: 18 in
- Barrel: 4140 carbon steel, #4 contour
- Muzzle Threads: 5/8×24
- Barrel Finish: Graphite Black Cerakote
- Stock: Fiberglass-reinforced synthetic, OD Green, SoftTouch finish
- Length of Pull: Adjustable via spacer system
- Safety: Two-position
- Optics Mount: Two-piece scope rail, Picatinny-style ring compatible
- Weight: Approx. 6.75 lbs
What’s Included
- CVA Cascade SB bolt action rifle
- One flush-fit detachable magazine
- Two-piece scope rail (factory installed)
- Thread protector
- Owner's manual
Frequently Asked Questions
Is the CVA Cascade SB 450 Bushmaster suppressor ready?
Yes, the muzzle is threaded 5/8×24, which is the common thread pitch for most 30 caliber and larger suppressors and brakes. The whole point of the SB, short for Short Barrel, is that the 18 inch tube keeps overall length manageable even with a can attached. It makes a great suppressor host for hunting from a blind.
What's the difference between the Cascade SB and the standard CVA Cascade?
The SB shares the same action, stock design, and features as the original Cascade but runs a shorter #4 contour barrel. In 450 Bushmaster that means 18 inches instead of the standard 22, so it points faster and maneuvers better in tight quarters. The 450 Bushmaster burns its powder efficiently in short barrels, so you give up very little in the deal.
Can I mount a scope on the Cascade SB right out of the box?
Yes, it ships with a two-piece scope rail already on the receiver that accepts Picatinny-style rings. The 70 degree bolt throw also gives extra clearance for scopes with larger objective bells, so you won't be rapping knuckles on your glass when you cycle the action.
Is 450 Bushmaster a good deer cartridge for this rifle?
It's a proven performer on whitetail and hogs inside 200 yards or so, delivering a heavy .452 caliber bullet with serious knockdown authority. Paired with this compact 18 inch bolt gun, it's a natural fit for stand and blind hunting where shots tend to be closer. Ammo is widely available from Hornady, Federal, Winchester, Remington, and others.




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