Arrow Performance Calculator
estimated speed
on chart
v(m) = baseline × √(377 / (m + 27)) ·
baseline = IBO + (DL−30)×10 + (DW−70)×2 ·
Arrow Speed = v × 0.975 · Est. KE = KE × 0.97 ·
Miss window = drop difference at ±3 yds from sight-in distance ·
Virtual mass model fitted to chrono data (RMSE 1.14 fps, 4 bows, 16 points)
Flat Trajectory
(≈350–449 gr / under 6.5 GPP) The lightest, fastest builds in your tuning window. Speed flattens the arc and shrinks the cost of a misjudged yardage — ideal for open-country hunts where shots stretch past 40 yards and pin gaps are tight, but you'll give up downrange kinetic energy and momentum.
Optimal Balance
(≈450–550 gr / 6.5–7.9 GPP) The sweet spot most bowhunters land in. You keep enough speed for a forgiving trajectory while picking up meaningful kinetic energy and momentum gains — a versatile build that handles whitetails, mule deer, and elk-sized game without forcing you to commit to one extreme.
Penetration Focus
(≈551–650 gr / 7.9–9.30 GPP) Momentum starts doing the heavy lifting here. Trajectory drops more noticeably and speed bleeds off, but the arrow drives deeper through bone and heavy muscle — a smart pick for elk, bear, and other thick-skinned game where pass-throughs matter more than pin-precision at distance.
Heavy Hitter
(≈450–550 gr / 6.5–7.9 GPP) The sweet spot most bowhunters land in. You keep enough speed for a forgiving trajectory while picking up meaningful kinetic energy and momentum gains — a versatile build that handles whitetails, mule deer, and elk-sized game without forcing you to commit to one extreme.