Vortex Diamondback 3.5-10x50 – Dead-Hold BDC (MOA) (DBK-03-BDC)

The 50mm objective is why you'd choose this one. More glass up front means more light reaching your eye at dawn and dusk — which is when most game moves and most shots present themselves. Otherwise it's the same well-sorted hunting scope: a 1-inch tube, capped turrets, the XD Optical System, and the Dead-Hold BDC reticle. 15.5 ounces, 12.5 inches. Vortex SKU DBK-03-BDC, UPC 875874001145.

Fifty Millimeters of Objective

A larger objective gathers more light, and on a hunting rifle that translates directly into usable minutes at the start and end of legal light. The tradeoff is height — a 50mm bell needs taller rings, which raises your cheek weld slightly. If you hunt low light, that trade is worth making.

Dead-Hold BDC

The Dead-Hold BDC reticle uses a customized dot design to eliminate holdover and windage guesswork at varying ranges — clean enough to keep the picture uncluttered, useful enough to extend your practical range.

Built for a Hunting Rifle

• Capped turrets — set your zero and forget it.
• Fixed 100-yard parallax — nothing to fiddle with in the field.
• 1-inch tube.
• Fast-focus eyepiece.
• XD Optical System with fully multi-coated lenses.
• Aircraft-grade aluminum, machined from a solid block, matte black anodized.
• Argon purged and O-ring sealed — waterproof, fogproof, shockproof.

Specifications

3.5-10x50 or 3-9x40?

Choose the 50mm for low light. Choose the 40mm for a wider field of view, a lower mount, and an ounce less weight.

Frequently Asked Questions

Do I need taller rings for the 50mm?
Usually yes — a 50mm objective bell needs more clearance than a 40mm. Contact us with your rifle and we'll get the ring height right.

What's the advantage over the 3-9x40?
Light gathering at dawn and dusk, and a bit more magnification. The 3-9x40 gives you a wider field of view and mounts lower.

Do I need to adjust parallax?
No — it's fixed at 100 yards.