Vector Optics ViperRay 8 mm Cartridge Red Laser Bore Sight (SCBCR-06) — Fast, ammo-saving pre-zero for 8 mm hunting & vintage rifles

The Vector Optics ViperRay 8 mm Cartridge Red Laser Bore Sight is a caliber-specific, cartridge-shaped collimator that gets your optic on paper in minutes. Machined from brass to replicate an 8 mm cartridge case, it projects a bright 650 nm red Class IIIA (<5 mW) laser precisely along the bore axis so you can align a riflescope, prism, or red-dot indoors before live fire. Arrive at the range already close to zero, save time and ammunition, and finish with a precise live-fire zero tailored to your load and distance.

Because it chambers like a live round, the ViperRay seats concentrically for a stable, repeatable reference point—ideal after optic swaps, new mounts, or travel. The compact design weighs just 31 g and measures 56 mm in length, making it a pocket-size tool that lives easily in your range bag for quick checks whenever you need them.

Key Parameters

• Caliber: 8 mm (cartridge-form chamber insert)
• Laser Class / Output: Class IIIA, <5 mW
• Wavelength: 650 nm (red)
• Body Material: Brass
• Length: 56 mm (2.2″)
• Weight (net): 31 g (1.1 oz)
• Power: 3 × AG3 / LR41 button cells
• Model / SKU: SCBCR-06 (ViperRay series)

Real-World Use Cases

New optics, rings, or bases

Mount a fresh scope or change rings, then use the bore-axis laser to align your reticle to a fixed indoor reference. You’ll hit paper immediately at the range and need only a few shots to finalize zero.

Pre-season and post-transport checks

After a long trip or rough handling, chamber the ViperRay to verify your reticle still overlays the laser on your chosen aim point before confirming with live fire.

Classic 8 mm builds & shared optics

Whether you run a vintage 8×57 rifle or rotate optics among several 8 mm platforms, this cartridge-accurate insert speeds consistent re-indexing and saves premium hunting ammo.

Mechanical & Build Highlights

• Cartridge-accurate geometry: Brass case dimensions seat concentrically on the bore axis for repeatable alignment in 8 mm chambers.
• Bright, visible reference: 650 nm dot provides a clear aiming point for rapid coarse alignment under typical indoor lighting.
• Compact & durable: Pocket-size unit with robust construction stands up to frequent chambering during setup and maintenance cycles.
• Simple workflow: Zero your optic at the range after coarse alignment—laser travels straight, while bullets follow a ballistic arc.

What’s in the Box

• ViperRay 8 mm cartridge red laser bore sight (SCBCR-06)
• User instructions
• Batteries not included (requires 3 × AG3/LR41 button cells)

Compatibility & Setup Notes

• Chambering: For firearms marked 8 mm. Always verify the exact cartridge designation of your rifle (e.g., 8×57) and use the matching bore-sight model when applicable.
• Safety: Ensure the firearm is unloaded, magazine removed, and chamber clear before inserting the bore sight. Keep the muzzle pointed in a safe direction; avoid eye exposure to the laser.
• Initial alignment: Choose a small indoor reference mark (5–15 m). Adjust your reticle or sight until it coincides with the laser dot.
• Finalize at the range: Confirm and fine-tune zero with live ammunition at your chosen distance (e.g., 100 m), accounting for load and environmental factors.
• Battery care: Insert three AG3/LR41 cells with correct polarity; remove between uses to prevent drain.

Technical Specifications

Summary

The ViperRay 8 mm Cartridge Red Laser Bore Sight is a simple, durable way to pre-align optics and cut sight-in time. Its brass, cartridge-accurate body and 650 nm Class IIIA laser put you close fast—so you can confirm with a handful of rounds and head into the season confident in your zero.