Free Remington Ballistics Calculator
Enter your load data to estimate trajectory drop, remaining velocity, energy, wind drift, and time of flight.
Model note: this tool uses a simplified drag model for educational planning. Real-world dope depends on exact bullet design, atmospherics, twist, and chronograph-confirmed velocity.
What this Remington ballistics calculator does
This page gives you a practical starting point for understanding rifle trajectory with common Remington-style hunting and target loads. By combining muzzle velocity, bullet weight, ballistic coefficient, and zero distance, you can quickly generate a range table showing how your bullet slows down and drops over distance.
Whether you shoot .223 Remington, .243 Winchester, .270 Winchester, .308 Winchester, or .30-06 Springfield, the same core physics applies. A calculator like this helps you compare loads and build a cleaner workflow before range verification.
How to use the calculator
1) Enter basic load data
- Muzzle Velocity: Use chronograph data when possible.
- Bullet Weight: Enter grains from your actual projectile.
- Ballistic Coefficient (G1): Use manufacturer BC as a starting point.
- Zero Range: Your confirmed sight-in distance (for example, 100 or 200 yards).
2) Add setup and environment assumptions
- Sight Height: Center of optic above bore centerline.
- Crosswind: Full-value wind estimate in mph.
- Max Range + Step: Controls how far and how detailed the output table is.
3) Click calculate and read your table
The generated table includes range, estimated velocity, energy in ft-lbs, bullet path (relative to line of sight), wind drift, time of flight, and drop in MOA. Negative drop values indicate impact below your line of sight at that range.
Understanding each output field
Trajectory / Drop (inches)
Drop is shown relative to your zeroed line of sight. Around your zero distance it should be near 0. As distance increases, gravity and drag create a larger negative value.
Remaining velocity (fps)
Velocity retention is one of the best indicators of downrange performance. Higher BC bullets generally maintain speed better and reduce both drop and drift.
Kinetic energy (ft-lbs)
Energy is computed from bullet weight and current velocity. It helps compare loads, but terminal performance also depends on bullet construction and impact speed window.
Wind drift (inches)
Wind drift estimates lateral movement from a full-value crosswind. This value grows quickly with distance because the bullet is exposed to wind for a longer time.
MOA correction
MOA converts linear drop into scope adjustment language. If your scope uses 1/4 MOA clicks, multiply MOA by 4 for approximate click count.
Example use cases
- Compare two hunting loads with the same bullet weight but different BC values.
- Preview how a 100-yard zero differs from a 200-yard zero.
- Estimate holdover and wind hold at 300, 400, and 500 yards before range day.
- Build a printable “first-pass” trajectory card to verify with real impacts.
Tips for better results
- Chronograph your rifle, not just published box velocity.
- Confirm actual zero and sight height with careful measurements.
- Use consistent units and avoid rounding too early.
- Validate at multiple distances and true your numbers.
- Record temperature, pressure, and altitude during confirmation.
Frequently asked questions
Is this as accurate as a professional solver?
It is intentionally lightweight and fast, but simplified. Professional solvers use detailed drag curves, atmosphere inputs, and advanced stability modeling.
Should I use G1 or G7 BC?
This tool accepts G1 BC. Many modern long-range bullets are often better represented by G7 in advanced calculators, so expect some deviation at extended distances.
Why does real impact differ from the table?
Small differences in velocity, wind call, scope tracking, cant, and atmospheric density can shift impact. Treat this output as a baseline, then true it with observed data.