Archery

Spine math, tune math.

Spine math, tune math.

Arrow spine calculators that account for bow type, draw weight, draw length, point weight, and IBO speed. Plus real takes on equipment that ranges $200-2000 for the same shot.

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Calculators

Working tools that answer one specific question. No "sign up to see results." No upsell paywall.

Most used Arrow Spine Calculator Compound or recurve, draw weight, draw length, arrow length, point weight, IBO speed. Returns snap-to-standard spine (300, 340, 400, 500, 600) with acceptable range. Open calculator → Sight Tape Generator Yardage marks for your specific setup. IBO + arrow weight = trajectory by 5 yard increments to 80 yards. Open calculator → Kinetic Energy Calculator KE and momentum for ethical big-game hunting. State-by-state minimums included. Open calculator →

Real Gear Reviews

The cheap option is usually fine. When it isn't, this site says so. Reviews include real cost-of-ownership math, not "5 stars on Amazon" reasoning.

TroubleshootingWhy your arrows fly left or right — it's usually spine, not your aimAn arrow is a spring, not a stick: it bends around the bow and has to recover. A drift no aiming fixes is often a spine mismatch. The archer's paradox, static vs dynamic spine, the bare-shaft test, and the cheap fixes before new arrows.GuideDraw-weight ego is the beginner's biggest mistakeNew archers buy the heaviest bow they can haul back once, as if difficulty were a virtue. It's the fastest way to build bad form, hurt yourself, and quit. Li…

Why this page exists

Archery content online is split between commercial brand reviews and trad archery purism. This site is run by a person who shoots a compound for hunting and a recurve for fun.

The spine math here uses Easton's chart adjusted for what real shooters report in real conditions. Theoretical perfect tune doesn't survive contact with wind, broadheads, and tired arms. The tools bake in the real-world margin.

Plain note about money. Some links in the reviews and calculator results go to product pages on eBay with an affiliate tag. If you buy through one, the commission pays for the site. Your price doesn't change. The cheap option is usually fine; when the expensive option is worth it, this site will explain exactly why.

Gear actually worth buying

Smart eBay searches we'd start with ourselves. We earn a small commission on qualifying sales through these links; the price you pay is the same whether you use them or go direct to eBay. Full disclosure.

🔍 Shop Archery on eBay →
Black Compound Bow Set Duke VI Quiver Youth + Beginner ArchersCompound bowA starter compound package (bow + sight + rest + quiver) makes more sense than building piece by piece. 40 lb Black / White / Camo Camouflage 62" Archery Hunting Takedown Recurve BowRecurve bow (takedown)Takedown recurves are the sensible first bow for most people. The limbs are replaceable as you improve. Carbon Express Arrows Maxima Sable RZ Selects Shafts 12-Pack - SPINE - 400Carbon arrows (dozen)Spine rating has to match your draw weight. A dozen 400-spine carbons covers most 30–50lb setups. 9‘’x9''x9'' Archery Polyhedral Target 3D High Density Foam Cube Target ShootingArchery target (foam block)Foam block targets stop field points cleanly and pull arrows without damage. 18" or 24" block is standard. TRUGLO TRU-FIT Universal Replacement Wrist Strap Archery Release Aid, Black BOARelease aid / wrist strapWrist-strap releases are the default starting point for compound. Hand-held thumb triggers come later.
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