Vortex Crossfire II 30mm 4-16×50 AO Dead-Hold BDC

Product Description

The Vortex Crossfire II 4-16×50 AO Dead-Hold BDC is a 30mm tube riflescope designed for hunters and precision shooters who need adjustable magnification and holdover-based rangefinding.

This optic combines a variable 4-16x magnification range with a 50mm objective lens and adjustable objective (AO) parallax correction. The Dead-Hold BDC reticle provides aiming points at extended distances without dialing adjustments.

It works well on centerfire rifles for both tactical applications and big-game hunting where precise shot placement matters beyond 300 yards.

Key Facts

• Model: Vortex Crossfire II CF2-31039
• Tube Diameter: 30mm
• Magnification Range: 4-16x
• Objective Lens: 50mm
• Reticle: Dead-Hold BDC
• Parallax Adjustment: Adjustable Objective (AO)

Understanding the Dead-Hold BDC Reticle

The Dead-Hold BDC (bullet drop compensator) reticle uses hashmarks below the center crosshair to compensate for bullet drop at longer ranges. Each mark corresponds to a specific distance when paired with a given load and zero distance.

This lets you hold over rather than dial turret adjustments in the field. The reticle includes windage hash marks on the horizontal stadia, allowing you to account for drift as well. You’ll need to confirm drops with your specific ammunition to use the holdovers accurately.

Adjustable Objective and Parallax Correction

The AO (adjustable objective) ring on this Crossfire II sits at the objective bell, not on a side turret. Turning the ring brings targets at different distances into sharp focus and eliminates parallax error.

Parallax appears as reticle shift when your eye moves off the scope’s center axis. At higher magnifications and longer distances, uncorrected parallax can throw your point of impact off by several inches. The AO system keeps the reticle plane aligned with the target plane across a range of yardages.

30mm Tube and Mounting Considerations

The 30mm main tube requires 30mm rings, not the more common 1-inch size. Most tactical and precision riflescopes now use 30mm tubes because they allow more internal adjustment range in the erector system.

Before purchasing rings, confirm the height you need based on your rifle’s rail height and the objective bell diameter. Call 817-393-4000 if you need help choosing compatible mounts or rails.

Buying from Western Sport in Roanoke, TX

Western Sport is a licensed FFL/SOT dealer serving the North Texas and DFW area since 2007. We handle transfers, special orders, and offer gunsmithing services on site with owner and gunsmith Lance Rankin. Reach us at 817-393-4000 for questions on optics, mounting, or compatibility with your rifle.

Frequently Asked Questions

Q: What magnification does the Vortex Crossfire II CF2-31039 offer?

A: The Vortex Crossfire II CF2-31039 offers 4-16x variable magnification. The lower 4x setting works well for closer targets and quick acquisition, while the 16x upper end provides detail for precision shooting at longer distances.

Q: What is the Dead-Hold BDC reticle and how do I use it?

A: The Dead-Hold BDC reticle features hashmarks below the center crosshair that correspond to bullet drop at increasing ranges. You hold the appropriate mark on your target rather than adjusting turrets. You’ll need to verify drops with your specific ammunition and zero distance to know which mark to use at each yardage.

Q: Will 1-inch scope rings fit the Crossfire II 4-16×50 AO?

A: No, this Crossfire II uses a 30mm tube and requires 30mm scope rings. Standard 1-inch rings will not fit. Make sure any mount or ring set you order specifies 30mm diameter.

Q: What does AO mean on this Vortex scope?

A: AO stands for adjustable objective, which means parallax correction is done by turning a ring on the objective bell rather than a side focus knob. This lets you eliminate parallax error and sharpen focus at different target distances, which is critical for accuracy at higher magnifications.

Q: What rifles work best with a 4-16×50 riflescope?

A: A 4-16×50 riflescope pairs well with bolt-action or semi-automatic centerfire rifles chambered in cartridges like .308 Winchester, 6.5 Creedmoor, .223 Remington, or similar calibers used for precision shooting and hunting. The magnification range suits both mid-range work and shots beyond 500 yards when conditions allow.

Q: Can I order the Vortex Crossfire II 4-16×50 from Western Sport if I’m not local to Roanoke?

A: Yes, Western Sport serves customers across the DFW area and beyond. Call 817-393-4000 to place an order or ask about shipping. If you need help selecting rings, confirming compatibility, or discussing zero and setup, our team can walk you through those details over the phone.

Additional information