The SME Sight-Rite Chamber Cartridge Laser Bore Sighting System (model XSIBL270W) is a precision-machined brass chamber cartridge sized to the shared WSM case head, fitting .270 WSM, .300 WSM, .325 WSM, and 7mm WSM rifles.

Key Specifications

• Caliber Fit: .270 WSM / .300 WSM / .325 WSM / 7mm WSM
• Style: Precision-machined brass chamber cartridge, laser bore sighter
• Alignment: Caliber-specific factory alignment
• Laser: High-output laser
• Weight: 0.2125 lb
• Batteries Included: 3x LR41 lithium batteries
• Use: Chambers like a live round for muzzle-to-target laser bore sighting
• Model: Sight-Rite
• Manufacturer: SME Products

Frequently Asked Questions

Which WSM calibers does this one sighter cover?
It’s machined to the shared WSM case head, so it fits .270 WSM, .300 WSM, .325 WSM, and 7mm WSM.

What’s included with the sighter?
The unit ships with three LR41 lithium batteries installed and ready to use.

Buy the SME Sight-Rite WSM Bore Sighter Today

Shop more SME Products optics or browse our full Scope Accessories & Scope Parts selection at Schaefer Defense.