Killer Instinct Crossbow Speed Chart: FPS by Model

Killer Instinct names most of its crossbows after their advertised speed, so decoding the lineup is simple once you know the pattern. A 405 is rated around 405 FPS, a 415 around 415, a 420 around 420, and a 435 around 435. The reverse-draw models with an X in the name - the Vital-X 430, Fatal-X, and Tempr-X - sit at the premium end of the range. That advertised figure is measured with the manufacturer's own bolt weight, so treat it as a top-line reference, not a promise for every setup. Two things matter more than chasing the biggest number: how the crossbow handles, and whether it comes cocked and sighted the way you need. Speed is easy to read off the name; fit and cocking effort are what you feel on every shot.

Here is the current lineup sorted by advertised speed, with published draw weight where the manufacturer lists it. Each model links to its full breakdown - specs, package contents, and who it fits.

A dash means the manufacturer doesn't publish a single draw-weight figure for that package, not that the crossbow is weaker - reverse-draw models in particular reach high speeds at a lower peak draw weight thanks to their geometry and let-off. Once you have picked a speed, plan the consumables around it: the right HYPR bolts and a Lumix scope calibrated to that FPS.

Speed sells crossbows, but for the game most hunters chase it is rarely the limiting factor. For whitetail deer inside 40 yards, any crossbow in the 400 FPS range delivers plenty of kinetic energy for a clean, ethical pass-through with a properly matched broadhead. That covers the entire Killer Instinct entry tier - a Lethal 405 or Fiery 400 is not "too slow" for deer.

Where the faster 420-435 FPS models earn their keep is longer shots, bigger-bodied game, and heavier bolt-and-broadhead combinations. More speed flattens your trajectory, which shrinks the penalty for a slightly misjudged yardage, and it preserves more energy downrange. The trade-off is usually more cocking effort or a higher price. If you hunt from a treestand or have shoulder issues, pairing a fast rig with the DSC Dead Silent Crank matters more than squeezing out the last 15 FPS.

At the top of the speed chart, the Logix 435 RDC is the fastest model in the line at about 435 FPS, and it does it in a compact reverse-draw frame with the DSC crank standard. The Vital-X 430 is the fastest forward-draw option at roughly 430 FPS with a 50% let-off, and the Rapid 420 is the quickest of the mid-tier bundles.

At the entry end, the Fiery 400, Lethal 405, and Fierce 405 all land in the 400-405 FPS band - proven, hunt-ready speed at the lowest cost of entry. For a first crossbow, the difference between 405 and 435 FPS matters far less than getting a model you can cock comfortably and shoot often. The model comparison breaks down which tier fits which hunter.

The FPS on the box is a best-case figure measured with the lightest bolt the manufacturer rates. Your actual speed depends on a few things:

• Bolt weight: heavier bolts fly slower but carry more kinetic energy. Every roughly 25 grains of added arrow weight trims a few FPS - see the bolts and arrows guide for how HYPR bolt weights compare.
• String and cable condition: stretched, dry, or aging strings lose speed and consistency. Waxing them and replacing worn strings and cables on schedule keeps you near the rated number.
• Broadhead and accessories: mechanical broadheads and heavier nocks or inserts add weight at the tip, which shaves a little speed but often improves penetration.
• Rail lube and maintenance: a clean, properly lubed rail reduces friction on every shot.

None of this means the advertised FPS is wrong - it just means your chronograph reading will land a bit under the headline number once you set the crossbow up to hunt. Match your bolt weight to your goal, keep the string fresh, and the speed difference between models stays roughly what the chart shows.