Arrow Ballistics Calculator

Rheingans drag · RK4 velocity integration · Calibrated: 296gr@350fps?309fps@100yd · FOC per ATA standard · OD diameter

Arrow 1 — HLR 350
Shaft
Length
in
GPI
gr/in
Diameter (OD)
in
Front
Insert weight
gr
Back weight
gr
Point / broadhead
gr
Rear
Nock weight
gr
Vane count
Vane weight each
gr
Vane length
in
Vane height
in
Sight-In
Speed override
fps
Zero distance
yds
Total weight—
Drag coeff K—
Vane area F—
FOC (ATA)—
Speed—
KE at launch—
Peak rise—
Flat window—
Arrow 2 — RIP XV 400
Shaft
Length
in
GPI
gr/in
Diameter (OD)
in
Front
Insert weight
gr
Back weight
gr
Point / broadhead
gr
Rear
Nock weight
gr
Vane count
Vane weight each
gr
Vane length
in
Vane height
in
Sight-In
Speed override
fps
Zero distance
yds
Total weight—
Drag coeff K—
Vane area F—
FOC (ATA)—
Speed—
KE at launch—
Peak rise—
Flat window—
Bow Settings
Bow make / model
IBO speed
fps
IBO draw length
in
IBO draw weight
lbs
Your draw length
in
Your draw weight
lbs
Accessories penalty
fps
Sight height above bore
in
Estimated base speed (IBO-adjusted, at 350gr): —  ·  Per-arrow speed adjusts ±3fps per 5gr vs 350gr
Window & Chart Settings
Max drop (window low)
in
Max rise (window high)
in
Wind speed
mph
KE threshold (whitetail)
ft-lb
KE threshold (elk)
ft-lb
Chart Y min (drop)
in
Chart Y max (rise)
in
Table start
yds
Table end
yds
Table increment
yds
Sight Setup
Sight make / model
Pin count
Setup type
A1 weight
—
A2 weight
—
speed diff A2
—
drag diff A2
—
window leader
—
Trajectory
Kinetic Energy
Taylor KO
Wind Drift
Pins / Holdover
Scorecard
A1
A2
window
Angle
Yards A1 fps A1 drop A2 fps A2 drop A1 ? A2 ?

Rheingans K = K?BD² + K??LD + K???F · K?=0.003 K??=0.000013 K???=0.00034 · Velocity via incremental integration calibrated to reference ballistics data (296gr@350fps ? 309fps@100yd) · FOC per ATA standard · Diameter = OD · Angle: drop Χ cos(?) per rifleman's rule — arrow hits high vs flat-ground aim point at angles >0°.