Ballistics calculator
Enter your load and your conditions, and see the trajectory out to 1,600 yards. The conditions start at typical values — change any of them.
Ammunition
1 / 4A G7 number is roughly half its G1 equivalent, so the two are not interchangeable. Use whichever the coefficient beside it was published against — several Choice loads publish G7 only.
The ballistic coefficient already carries diameter, so this does not change the trajectory. It identifies the bullet, and it is what a spin-drift figure would be built on.
Rifle setup
2 / 4Shooting a Choice load and not sure of the figure for your barrel? Open Advanced — there is a helper that works it out from our test velocity.
Conditions
3 / 4Wind is the horizontal wind as you feel it at the rifle, and the angle is the direction it blows from. On an angled shot the calculator works out for itself what that wind does along the slope.
Trajectory range
4 / 4Range is measured along your line of sight — the distance you read off a plain laser rangefinder. If your rangefinder has angle compensation (ACI, HORUS, ARC) and is giving you a “horizontal” or “shoot-to” number, use its plain reading instead: entering an already-compensated range together with a shooting angle corrects for the slope twice.
Advanced — pressure, humidity, shooting angle, twist rate ›
Both uphill and downhill make a bullet strike high compared with the same shot on the flat — which is why the direction is a labelled choice here rather than a minus sign.
Optional, and the calculator is complete without it. Twist belongs to your rifle, not to the ammunition, so it can never be filled in for you. It is recorded here for a spin-drift figure that is not published yet.
Our published velocities are measured in a test barrel. If yours is a different length, this estimates what you would see, at 25 fps per inch.
Estimated muzzle velocity
—fps
Trajectory
About these figures. They come from a point-mass model solved in your browser at the conditions listed above. Real results vary with your rifle, your load's actual velocity, and the weather on the day. Confirm your zero and your come-ups on a range before relying on them in the field.