Will the Durasight DS611B rail fit my short-action CVA Cascade chambered in .308 Winchester?

No, this specific model (DS611B) is engineered strictly for CVA Cascade Long Action receivers such as those chambered in .300 Win Mag, .270 Win, and .30-06. If you have a Short Action variant, you will need the corresponding short-action model instead.

Is this 20 MOA rail suitable for close-range hunting under 100 metres in the Australian bush?

For strictly close-range hunting under 100 metres, a 0 MOA rail like the Durasight DS113B is actually better suited. The 20 MOA forward tilt on the DS611B provides elevation for long-range shooting from 300 to 1,000 plus metres, and can occasionally prevent some low-travel optics from obtaining a standard 100-metre zero.

What mounting hardware is included, and what torque specification should be used during installation?

The Durasight DS611B comes complete with #6-48 receiver mounting screws to secure the one-piece aluminum rail to your rifle. Industry standard torque recommendation for aluminum rails fastened into receiver holes is 15 to 20 inch-pounds, and it is recommended to use a non-permanent threadlocker to withstand heavy recoil from calibres like .300 Win Mag.

Are there any Australian electrical or regulatory compliance certifications required for this mount?

No, electrical compliance certifications such as SAA, RCM, or 240V ratings are completely inapplicable to this product. This is a passive, solid-state mechanical rifle accessory containing no electronic components, making it fully legal and unregulated for use across all Australian states and territories.

CVA Long Action Rail - Durasight DS611B

The Durasight 20 MOA Picatinny Rail for CVA Cascade Long Action is a dedicated one-piece optic mounting base engineered specifically for long-action CVA Cascade bolt-action rifles. Machined from lightweight aluminum with a matte black anodised finish, this rail features a built-in 20 MOA forward slope designed to preserve internal scope elevation travel when dialling for distance. It mounts directly to the factory receiver drillings using the included #6-48 screws and provides a standard Mil-Std 1913 Picatinny platform compatible with both Picatinny and Weaver-style optic rings.

Key Features

20 MOA Built-In Elevation Bias: Incorporates a downward forward slope that saves optical turret adjustment, allowing shooters to engage targets at extended distances without bottoming out internal elevation travel.
Dedicated Long-Action Fit: Engineered exclusively to align with receiver screw patterns across CVA Cascade Long Action (LA) calibres such as .300 Win Mag, .30-06 Springfield, and .270 Win.
One-Piece Mil-Std 1913 Cross-Slot Rail: Offers full-length cross-slots for versatile ring positioning and optimal eye-relief adjustments using single-piece mounts or standard two-piece scope rings.
Machined Aluminum Construction: Features a durable, lightweight aluminum body protected by a corrosion-resistant matte black anodised finish.
Receiver Hardware Included: Ships with standard #6-48 mounting screws designed to secure directly into the rifle receiver's factory-tapped holes.

Specifications

Brand: Durasight
Model: DS611B
Mount Interface: One-piece Mil-Std 1913 Picatinny rail (Weaver compatible)
Cant / Incline: 20 MOA (Minutes of Angle)
Material: Machined aluminum
Finish: Matte black anodised
Fasteners: #6-48 receiver mounting screws
Firearm Compatibility: CVA Cascade Long Action (LA) bolt-action rifles only
Power Requirement: Passive / unpowered mechanical component

Who is the Durasight 20 MOA Picatinny Rail for CVA Cascade Long Action for?

Long-range big-game hunters — Mounts directly to CVA Cascade Long Action rifles to provide 20 MOA of built-in elevation offset, preserving turret adjustment when shooting across canyons and open country for sambar and red deer.
Open-country target shooters — Provides a rigid CVA Cascade optic mount with 20 MOA of downward cant, allowing optics to maintain enough elevation travel for engaging steel and targets at 300 to 1,000+ metres.

Less suitable for: Strictly close-range shooting under 100 metres where the 20 MOA forward tilt may prevent low-travel scopes from zeroing, in which case a 0 MOA optic mount is better suited, or for shooters with Short Action CVA Cascade variants and different rifle platforms that require separate dedicated base profiles.

SKU	DUR40820LP
Model #	DS611B
Brand	Durasight
Shipping Weight	1.0000kg

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Durasight Ds611b Picatinny Rail Cva Cascade Long Action 20 Moa

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