What Muzzle Velocity and BC Should I Enter in My Ballistic Solver for ELEY?

Enter a ballistic coefficient of 0.112 with drag model RA4, and for muzzle velocity use the mean velocity printed on your own box rather than a catalogue figure. Those three inputs give you the most accurate starting solution available before you have fired a shot. Then true the solver against your own chronograph and your own confirmed drops, because the last step belongs to your barrel.

The Inputs You Need

Why the Box Figure Beats the Catalogue Figure

ELEY publishes a velocity band for each product. For ELEY tenex, ELEY ultra extreme long range, ELEY match and ELEY team, that band is 317-330 m/s (1040-1085 ft/s).

A band is exactly that. Individual batches fall at points within it, and the difference between a batch near the bottom and a batch near the top is real enough to move your solution at distance. Entering the midpoint of a published band is guessing when you do not need to.

Every box of ELEY ammunition carries the answer instead. The batch code printed on the end panel (for example 10 26-04 244 over 1045) ends in the mean velocity of that specific batch. That number is measured data for the ammunition you are actually shooting.

Why the Box Figure Is a Four-Barrel Mean

ELEY tests 200 rounds from every batch across four different firearm brands during proofing. The velocity printed on the box is the mean of those measurements.

Using four different firearms is deliberate. A figure derived from a single test barrel would characterise that barrel as much as the ammunition. Averaging across four barrels of different manufacture produces a figure that describes the batch itself, which is what you want when the number has to be useful to thousands of shooters with thousands of different rifles.

The consequence for you is straightforward: the box figure is an excellent starting value and an honest one, but it is not a prediction of what your rifle will produce. Your barrel length, bore dimensions, chamber and throat condition, and the ambient temperature on the day will all shift the velocity you actually measure. A chronograph reading that differs from the box figure is normal. Both numbers are correct measurements of different things.

Truing the Solver

Once the three published inputs are in, the process is the same one used at any distance discipline.

Chronograph the batch through your own rifle. Fire a representative string in conditions close to those you will compete in, and use your measured mean as the solver’s muzzle velocity in place of the box figure. Keep the box figure noted, because it remains the identifier that lets you find a comparable batch later.

Confirm drops at distance and adjust. If your solver matches at closer distances but diverges further out, that is where small refinements to the velocity input and the environmental data earn their keep. Change one variable at a time.

Re-true when the temperature moves. Ambient temperature shifts measured velocity, so a solution trued on a cold winter range will not be identical to the same batch’s behaviour in summer.

Batch-Level Data Before You Buy

For deeper information than the box provides, ELEY publishes proof data for every batch in the covered products through the free Lot Analyser at eleyxshot.com. Enter the batch number and you can access the complete 200-shot proof group with X and Y coordinates for every shot, alongside velocity, group size, shot distribution, date loaded, ballistic coefficient, trajectory and radial dispersion across four barrel types. For solver work, batch-level trajectory and velocity data is considerably more informative than a single headline number.

The Rifle Still Has a Vote

A ballistic solver models the flight of the projectile. It cannot model how your barrel’s harmonics interact with a particular batch, and that interaction is what determines group size on the target. Good solver inputs alone do not satisfy the Triangle of Success, which sets the firearm, the ammunition and the shooter alongside each other. Batch testing at eley.co.uk/vip lets you evaluate up to 20 batches through your own barrel to find the lot your rifle shoots best.

The Bottom Line

Enter BC 0.112, drag model RA4, and the mean velocity printed on your specific box. Then chronograph that batch through your own rifle and replace the box velocity with your measured figure, re-truing when conditions change materially. Use the free Lot Analyser at eleyxshot.com for batch-level trajectory and velocity data, and batch testing at eley.co.uk/vip to find the lot your barrel shoots best.