Altra .246 Centrum Premier – Kauffman Custom Build

Standard-Diameter Power. Unmatched Component Compatibility. Premier ±.001" Match-Grade Precision.

For archers and hunters who prefer the proven simplicity, component stability, and rapid tuning of a standard-diameter 6.5mm (.246" ID) shaft, the Altra .246 Centrum Premier represents the absolute top tier of standard carbon construction. Engineered with an advanced carbon layup that maximizes structural hoop strength, this shaft offers exceptional stiffness-to-weight efficiency for high-speed compound setups.

Featuring Altra's signature NO SPINE™ Technology, every shaft is manufactured without a structural seam, guaranteeing identical 360-degree dynamic flex regardless of nock or broadhead rotation. Rated to a match-grade ±.001" straightness specification and weight-matched within ±1.0 grain per dozen, the .246 Premier delivers laser-flat trajectories and forgiving broadhead flight.

At Kauffman Custom Archery, we convert raw .246 carbon into elite, broadhead-steering hunting tools using our comprehensive studio bench prep.

The Kauffman Custom Studio Difference

Standard-diameter carbon built to ±.001" tolerances requires dedicated shop assembly to eliminate component wobble and ensure pinpoint long-range accuracy:

• Dynamic Roller Spine Indexing: Despite Altra’s seamless NO SPINE™ construction, every shaft is individually spin-tested on precision rollers to locate optimum dynamic stiffness before indexing nocks for identical flex out of your bow.

• Dual-End Diamond Squaring: Both carbon ends are precision-cut and squared using diamond abrasives, creating a perfectly flat 90-degree seating face for standard inserts, half-outs, and nocks to eliminate broadhead runout.

• Chemical Degreasing & Custom Hand Fletching: Shafts undergo deep solvent cleaning before receiving heavy-duty custom wraps and hand-fletched high-profile vanes (Q2i Rapt-X or AAE Max Stealth) for immediate steering control.

• Grain-Matched Dozen Sets: Your complete set is hand-sorted and grain-matched across the batch to keep your point-of-impact identical arrow after arrow.

Technical Specifications

• Shaft Inside Diameter: .246" (Standard 6.5mm Diameter)

• Carbon Construction: High-Modulus Carbon Layup with NO SPINE™ Radial Consistency

• Straightness Tolerance: Premier Match Grade ±.001"

• Weight Tolerance: ±1.0 Grain per dozen package

• Insert System: Includes Altra Standard .246 Inserts / Component System

• Nocks: Included Altra Precision .246 Nocks

• Spine Options & GPI:

  • 300 Spine: 9.3 GPI

  • 350 Spine: 8.4 GPI

  • 400 Spine: 7.8 GPI

  • 500 Spine: 6.9 GPI

Custom Build Options (Configured Above)

1. Spine Selection: Chosen based on your draw length, peak draw weight, and point weight preference.

2. Precision Carbon Length: Measured and cut carbon-to-carbon to your exact custom specification.

3. Insert & Component Weight: Standard aluminum inserts or upgraded heavy-weight options for added Front-of-Center (FOC).

4. Fletch & Wrap Customization: Select your wrap pattern, vane model, helical offset, and cock-vane color.

Want to test flight this shaft on your own setup before committing to a full dozen?

Order a single, bench-prepped sample arrow through our Test Flight Program. We will spine-index, dual-end square, wrap, and hand-fletch a single shaft to your exact specs and ship it straight to your door. Shoot it on your home range, test your broadhead flight, and use the included Store Credit Voucher directly toward your full dozen custom order!