Arrow setup analysis for a 26-inch arrow at 280 fps. Default specs: 364 gr arrow, 8.4 mm shaft diameter.
Total arrow mass for a 26" build: 364 gr = 221 gr shaft (8.5 GPI × 26") + 143 gr components (point + insert + nock + fletching).
KE: 63.4 ft·lbf — Momentum: 0.453 slug·ft/s
| Distance | Velocity | KE (ft·lbf) | Momentum (slug) |
|---|---|---|---|
| 0 yd | 280.0 fps | 63.4 ft·lbf | 0.453 |
| 10 yd | 274.5 fps | 60.9 ft·lbf | 0.444 |
| 20 yd | 269.2 fps | 58.6 ft·lbf | 0.435 |
| 30 yd | 263.9 fps | 56.3 ft·lbf | 0.427 |
| 40 yd | 258.7 fps | 54.1 ft·lbf | 0.418 |
| 50 yd | 253.7 fps | 52.0 ft·lbf | 0.410 |
This build pairs a short cut with a modern mid-speed compound launch. At 26 inches the shaft is compact and quick to tune, common on shorter-draw compound shooters who value a snappy, low-mass arrow, and 280 fps is the kind of speed produced by mainstream hunting compounds tuned for a balance of speed and forgiveness. Together they finish at about 364 grains, which is what drives the kinetic energy and momentum figures in the table above.
Because this is a short cut, the shorter column resists bending, nudging the dynamic spine toward the stiff side of the chart. The launch matters too: with a modern mid-speed compound launch, the dynamic-spine reaction is dominated by a versatile setup that flattens trajectory without giving up the stability a moderate arrow weight provides. Pick a static spine that lands stiff once this 26" shaft and your point weight are factored in, then confirm it with bare-shaft or paper tuning.
At roughly 63.4 ft·lbf this is deer-class kinetic energy — this falls in the comfortable range for whitetail and similar medium game, with enough energy for reliable pass-throughs on broadside shots. Keep in mind that a short cut at 280 fps is only the starting point; broadhead choice and shot placement still decide the outcome more than the headline energy number.
A modern mid-speed compound launch pushing roughly 364 grains yields about 0.453 slug·ft/s of momentum. That is moderate penetration potential: momentum sits in the moderate range, giving dependable penetration on soft tissue while still favouring shot placement over brute force. Momentum, more than raw kinetic energy, predicts how a 26" arrow holds up against bone and angled entry.
For a short cut launched at 280 fps, dial in rest centre-shot and timing first, then verify broadhead flight against field points at distance. A versatile setup that flattens trajectory without giving up the stability a moderate arrow weight provides — so re-check the tear any time you change point weight, since that shifts the dynamic spine on a 26" shaft more than most archers expect.