Budget & Import Arrow Brands Spine Chart Decode

When Your Arrows Have No Real Chart

The big-brand spine charts — Easton, Gold Tip, Victory, Carbon Express — answer one question cleanly: which spine number does your bow need? But a huge share of arrows sold today never appears in those documents. House brands at big-box retailers, marketplace imports, licensed kit arrows, and traditional shafts from specialist makers all print a spine-like number on the shaft, and almost none of them publish a deflection table you can trust. A Blackout 400, a Musen 400, and a Skylon ID6.2 400 are not automatically the same arrow — and the differences are exactly what this page measures.

This decoder covers fifteen channel brands: Blackout, Bloodsport, Beman, Bearpaw, Cross-X, Mossy Oak, Musen, Fleetwood, Sanlida, Sirius, Skylon, Accmos, Vital Impact, Warrior, and Allen Kryptos. For each one you get the reported numbering system, the mapping to AMO deflection, and the drift risks shooters have logged. The mainstream seven brands stay on the dedicated Arrow Spine Chart — the two pages deliberately share zero brands, so between them you can decode nearly any arrow on the market.

Every mapping on this page is reported and approximate. That is not hedging for its own sake: budget factories change tooling, listings get relabeled between model years, and licensed brands rarely publish specs at all. So each brand section ends with a verification step, and the whole page is built around one tool that works even when the manufacturer tells you nothing — the AMO 1.94 lb self-test.

The AMO 1.94 lb Self-Test Method

Static spine is just stiffness, and stiffness can be measured with a board, two supports, and one oddly specific weight. The AMO (Archery Manufacturers Organization) convention defines the standard: rest the arrow on two supports 26 inches apart, hang a 1.94 lb weight at the exact center, and read how far the shaft drops, in inches. That drop — the deflection — is measured against the 28″ arrow AMO baseline, and it converts to the spine number every chart uses: deflection × 1000 = spine number. A shaft that drops 0.400″ under the weight is a 400. One that drops 0.500″ is a 500 — softer, because more deflection means a weaker spine.

Building the 26-Inch Test Rig

Any rigid board works as the base. Screw or clamp two supports to it so the contact points sit exactly 26 inches apart — the inside edges of two angle brackets are the classic choice — and lay the arrow across them at its nock-to-point midpoint. The supports must be narrow (a V-notch or rounded edge is ideal) so the shaft contacts at single points, not on a flat cradle that would stiffen the reading. Hang the weight from the center with a hook or loop of cord. A cheap digital hook scale verifies your weight: anything from 1.90 to 1.98 lb shifts the result by only a few thousandths, but a guess from a random dumbbell can be off by half a grade. Full rig photos, alternative support designs, and the most common build mistakes are documented on the arrow spine tester page, which pairs with this decoder — measure there, decode here.

Reading the Deflection Number

With the weight hanging still, measure the vertical drop from the undeflected center line to the lowest point of the shaft, in inches, to three decimals if your ruler or calipers allow. Consistency matters more than instrument precision: always measure at the same span (26″), always center the weight, and always test bare shafts before fletching, because vanes add stiffness at the ends and skew the center reading slightly. Test each shaft twice — flip it end for end on the second pass — and average the two readings. If the two passes differ by more than about 0.010″, the shaft is tapered, damaged, or inconsistently made, and no chart number for it deserves trust until you understand why.

Converting Deflection to a Spine Number

The conversion is the simplest math in archery: multiply the deflection in inches by 1,000, then round to the nearest standard grade — 200, 250, 300, 340, 350, 400, 450, 500, 600, 700, 800, 900, 1000. A reading of 0.396″ is 396 thousandths, which rounds to 400 spine. A reading of 0.523″ rounds to 500. Note that 340 and 350 are both real grades in common use, four-hundredths apart — measure carefully rather than assuming. The number you get is the static spine on the 28″ AMO baseline; your bow feels a dynamic spine that shifts with cut length and point weight, and that final fine-tuning belongs in the Arrow Spine Calculator, which takes your measured number as its starting point.

Same Number, Different Factory — the Drift Problem

Here is the single most expensive misconception in budget archery: assuming that a printed 400 means the same thing on every package it appears on. It does not. The number on the shaft is a claim, and the claim chain is only as tight as the weakest link: the factory that pultruded the carbon, the brand that bought the shafts, and the listing writer who typed the spec sheet. Shooters who actually measure report three distinct drift patterns. Tolerance drift — within one batch, budget lines commonly spread wider than premium lines, so a dozen printed 400 can measure anywhere from roughly 0.38″ to 0.42″. Batch drift — when a factory retools or changes fiber supplier, the next shipment of the same model can sit half a grade off the last one. Labeling drift — some import listings print a number derived from the brand’s own draw-weight bands rather than a true deflection measurement, which makes the printed number off by design, not by accident.

This is why every brand section below carries a drift-risk tag, and why the decoder adds a reported range around every estimate. The fix costs one minute per shaft: measure with the rig, write the true number on the shaft with a paint pen, and sort your dozen into matched groups. A sorted budget dozen outshoots an unsorted premium one — the premium label only buys you tighter spread if you verify it actually shipped that way.

Budget & Import Brand Spine Charts, Decoded Brand by Brand

Blackout Arrow Spine Chart — the Academy Sports House Brand

Blackout is the in-house arrow brand of Academy Sports + Outdoors, sold in US stores and online as bundles aimed at first-time bowhunters. The blackout arrows spine chart story starts with a conventional system: most current carbon lines print a standard spine number — 350, 400, or 500 — directly on the shaft. Under the AMO convention, the blackout arrow spine chart maps straight to deflection: a printed 400 reads as approximately 0.400″ on the rig. Two pitfalls are reported repeatedly. First, batch drift — shooters who bought the same model months apart have logged readings differing by up to around ±0.02″. Second, the box chart assumes the heaviest factory point, which pushes its draw-band recommendations toward softer arrows than you need with light field points. Decode the printed number with Mode A, then self-test one uncut shaft per dozen; if the rig disagrees with the print by more than about 0.02″, trust the rig.

Bloodsport Arrow Spine Chart

Bloodsport occupies the value tier of big-box and online retail, and its numbering is refreshingly boring: standard 300/340/400/500 carbon grades, decoding on the ÷1000 rule like most carbon brands. The bloodsport arrows spine chart question is not whether the numbers exist — it is how tightly the factory holds them. As a budget-positioned line, its quality-control tolerance runs wider than match-grade shafts, so two shafts from the same bloodsport arrow spine chart grade can differ by a noticeable fraction of a grade on the rig. Practically, that means three habits: buy one batch at a time, paper-tune with your actual broadhead before season, and spin-test after hard impacts on steel or rock. For the draw-band side of a Bloodsport 400 build, the 400 spine guide covers the bow weights the grade fits.

Beman Arrow Spine Chart — the Easton Family Exception

Beman is the easy one — because Beman is owned by Easton and is one of the original carbon hunting shaft brands. Beman shafts (the ICS Hunter family is the best-known line) print spine numbers on the same AMO deflection scale Easton carbon uses, so a beman arrow spine chart needs no conversion table at all: a Beman ICS Hunter 400 is reported to match an Easton 400 in static stiffness, one-to-one. That makes Beman the reference point every other budget brand on this page drifts from. The one thing to verify is not spine but weight — the published GPI figures are model-specific and change between lines, so confirm the GPI printed on the box before you calculate a finished-arrow weight. If your bow calls for a mainstream-brand spine number, you can buy the Beman equivalent with confidence.

Bearpaw Arrow Spine Chart — Traditional and Wood

Bearpaw is a German traditional-archery specialist whose catalog spans carbon traditional shafts and wooden arrows — and the two halves decode differently. The carbon-traditional lines carry spine numbers in the standard thousandths convention, commonly 400 through 1000 and beyond for lighter traditional bows, mapping on the ÷1000 rule. Wooden arrows are the reported complication: many are sold by spine too, but wood is a natural material, and grain, density and moisture make shaft-to-shaft variance unavoidable — some hunting-weight wooden shafts are sold by pound rating instead. For a bearpaw arrow spine chart you can trust, sort wooden shafts on the rig and match them by measured deflection, not by the bundle label. The 500 grade is the workhorse of the traditional world — see the 500 spine guide for the recurve and longbow draw bands it fits.

Cross-X Arrow Spine Chart — the European Channel

Cross-X is a European-distributed brand (Hungarian-based) stocked widely by EU archery shops, and its numbering follows the standard carbon convention — 300 through 900 across reported lines — mapping to AMO on the ÷1000 rule. The cross x arrow spine chart pitfall is geographic: EU-market batches and labeling have been reported to differ from US-market listings of nominally the same model, and some listings show a diameter code alongside the spine number that buyers occasionally conflate with stiffness. The decode workflow is the same as for any import brand, plus one habit: read the full label — bore code, spine number, and length — together before comparing prices across regions. Spot-check one shaft per dozen on the rig and treat the printed number as a starting claim, not a measurement.

Mossy Oak Arrow Spine Chart — Licensed Kit Arrows

Mossy Oak is a licensed camo brand, and the arrows carrying its name reach shooters mostly inside entry-level compound kits and box-store bundles. That packaging model is the whole story of the mossy oak arrow spine chart: kit arrows are chosen to match the bow’s factory chart at its peak setting, they are rarely re-verified as a standalone product line, and documentation is thin to nonexistent. Where numbers are printed — commonly 350/400/500 — they are reported to decode on the ÷1000 rule. The risk is not that the arrows are unusable; it is that the moment you change anything (a lighter point, an extra inch of draw, a new rest), the kit’s nominal number stops describing your setup. Self-test these arrows straight out of the box, especially before upgrading point weight.

Musen Arrow Spine Chart — E-commerce Numbering

Musen is a marketplace-native brand (Amazon and AliExpress storefronts), and it is the clearest example of labeling drift on this page. The musen arrow spine chart problem: while many Musen listings use standard numeric codes, some listings label arrows by the brand’s own draw-weight band instead of a true deflection measurement — reported cases exist where the printed number did not equal deflection × 1000, and listing spec sheets have changed between model years without a model-name change. Treat every printed Musen number as a claim to be tested, never as a spec. This is exactly why Mode B of the decoder exists: run the self-test, enter the measured deflection, and let the rig — not the listing — tell you what you bought. Budget one testing session per shipment, and match fletched groups by measured grade.

Fleetwood Arrow Spine Chart

Fleetwood is a traditional bow maker (longbows and recurves) that also sells matching carbon shafts, with reported spine offerings from 350 to 600 — the heart of the traditional draw-weight range. The fleetwood arrow spine chart mapping is conventional: ÷1000 to AMO deflection. The reported risk follows the traditional-market pattern — shaft suppliers change between production runs, so two purchases of the “same” arrow a year apart can measure differently, and the label may not tell you which run you received. The decode habit that protects you: verify each new batch on the rig before it gets mixed with older stock, and if you shoot a Fleetwood bow with Fleetwood arrows, remember the bow’s recommended spine assumes the factory point — a heavier traditional head weakens dynamic spine by a noticeable fraction of a grade.

Sanlida Arrow Spine Chart — the OEM Behind Many Labels

Sanlida is a large Chinese archery manufacturer producing complete bows and arrow shafts sold worldwide, both under its own name and as OEM production for other labels. Its numbering is standard — 350 through 900 in reported lines — mapping to AMO on the ÷1000 rule. The sanlida arrow spine chart risk is structural: OEM production means the same mold can serve several brands and several spec sheets, and batch-to-batch variance has been reported after factory retooling. Two practical consequences. First, a Sanlida-made shaft sold under a different brand name may still decode with the same habits on this page. Second, test every new batch before mixing it with old stock — “same model” is not a guarantee across shipments. The upside is value: verified-and-sorted Sanlida shafts are among the best spine-per-dollar buys in the sport.

Sirius Arrow Spine Chart

Sirius is an import budget carbon brand found on the major marketplaces, with reported spine offerings from 350 to 600 — the 400 grade being the one it ships most often. The sirius arrows spine chart mapping is the standard ÷1000 convention, but the reported drift is not: user measurements have logged differences of up to around ±0.02″ between batches, which is right at the boundary where paper tuning starts to disagree with the printed number. The workflow that makes sirius arrow spine chart purchases reliable: self-test the dozen, mark each shaft with its measured deflection, and sort into matched pairs before fletching. Sorted Sirius shafts group remarkably well for the price; unsorted ones group like the spread suggests they will. The 400 spine arrows guide lists the draw bands the grade serves.

Skylon Arrows Spine Chart — the ID System

Skylon, a Korean manufacturer, is the one brand on this page whose naming system needs a genuine decoder — which is why skylon arrows spine chart searches spike. Skylon labels lead with an ID code: ID4.2 means a 4.2 mm inner-diameter (micro) bore, ID6.2 means a 6.2 mm standard-large bore. The ID governs component fit — which inserts, outserts, and nocks seat correctly. The spine is printed separately as a conventional number (340–900 across reported lines) and decodes on the ÷1000 rule like every other carbon brand: an ID6.2 400 is a standard-bore shaft with approximately 0.400″ deflection. The reported pitfall is buyers mistaking the ID for the spine, or ordering components for the wrong bore — an ID4.2 insert will not seat on an ID6.2 shaft. Decode the bore first, then the spine, then check both against your build.

Accmos Arrow Spine Chart

Accmos is a marketplace import brand with reported spine offerings from 350 to 800, covering compound and traditional setups alike, and its numbering follows the standard thousandths convention — ÷1000 to AMO deflection. The accmos arrow spine chart considerations are the generic budget-import set: limited published documentation, batch variance, and listing copy that sometimes conflates spine with draw weight. None of that makes the arrows unusable; it makes them unverified until you measure. Run one testing session per dozen on the 1.94 lb rig, discard or relegate any shaft that sits more than about half a grade from the group, and paper-tune with your intended head. Mode B of the decoder above is built for exactly this brand family — measure first, decode second, trust the rig over the listing.

Vital Impact Arrow Spine Chart

Vital Impact is a US budget-channel arrow line, sold with reported spine offerings of 340/400/500 — the standard hunting ladder. The vital impact arrow spine chart mapping is conventional (÷1000 to AMO), but the published documentation is thin: full deflection tables and per-batch tolerances are not consistently available, so the printed number is best treated as an approximate center of a reported range rather than a measurement. The decode-and-verify workflow matters most here before broadhead season — a shaft that field-points group acceptably with can still plane with a fixed broadhead if its true deflection sits half a grade off the print. Self-test before you screw in a hunting head, and keep one bare shaft from the batch uncut as your ongoing reference check.

Warrior Arrows Spine Chart

Warrior is another budget retail line, with reported spine offerings of 340/400/500 and the same thin-spec profile as the rest of this tier. The warrior arrows spine chart decode is conventional — ÷1000 to AMO deflection — but two verification habits are worth more than any chart here. First, a spin-test: roll each shaft on a flat table and watch for a hop, which reveals straightness problems that no spine number describes. Second, the deflection check on the rig, which catches both tolerance drift and mislabeling. Warrior arrows spine chart buyers who run both checks end up with arrows that shoot their printed grade; buyers who skip them are tuning blind against a number nobody verified. Treat the line as unverified inventory until your own rig says otherwise.

Allen Kryptos Arrow Spine

Allen is a decades-old US hunting-gear house, and Kryptos is its arrow line sold through retail chains, with reported spine offerings of 340/400/500 decoding on the standard ÷1000 AMO rule. The allen kryptos arrow spine risk profile is the retail-channel one: spec sheets are sparse, and the line’s consistency has to be verified rather than assumed. Verify spine and straightness together — they are independent defects, and a perfectly-spined but crooked shaft still planes on release just like a mis-spined straight one. One session on the rig plus one roll-test on a flat surface covers both. For the draw-weight side of a Kryptos 340 or 400 purchase, decode the grade with Mode A above and confirm the band against your draw length and point weight.

The 15-Brand Mapping Table at a Glance

Every brand on this page in one table: the numbering system you will see in listings, the approximate AMO equivalent, the drift risk shooters have reported, and the single suggested action that protects your dozen. All figures are reported and approximate — verify with a self-test.

Brand Number to AMO Deflection — the Mapping Flow

One flow fits every brand on this page, with a single branch point where the self-test decides whether the printed number survives. Run it top to bottom for any arrow you buy.

Tip, Warning, and the One Habit to Keep

Frequently Asked Questions

Your Next Step After the Decode

The workflow this page exists for, in four moves. One: decode the printed number with Mode A to get the approximate AMO deflection and its reported range. Two: build the 1.94 lb rig — the full instructions live on the arrow spine tester page — and measure the actual shaft. Three: reconcile the two; if they agree, the printed chart is usable, and if they disagree by more than about 0.020″, re-grade to your measurement with Mode B. Four: take the verified number and the band it maps to into the Arrow Spine Calculator, which adjusts for your real cut length and point weight, and confirm the result on paper with your hunting head.

Two grades cover most budget-brand purchases, and both have dedicated deep-dives: the 400 spine guide for 40–55 lb class bows and the 500 spine guide for the 30–45 lb and traditional range. For a first bow-and-arrow match from scratch, start at the homepage calculator, and keep the mainstream Arrow Spine Chart bookmarked for the seven premium brands this page deliberately leaves out.

One closing habit worth more than any table here: measure, mark, group. Fifteen brands, fifteen numbering quirks, and one rig reduce all of them to a single comparable number — and a dozen arrows that all agree with each other shoot better than a dozen arrows that all claim to.