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RSI Shooting Lab | PressureTrace | LoadForce | Chronographs

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Exterior Ballistics Icon RSI Shooting Lab Exterior Ballistics

Define trajectories by the impact height at any range (including far zero), a vital zone so the program will find the maximum point blank range or the bore angle. The last option is important if one wants to determine change to impact when only atmospheric conditions change since the trajectory is not predefined relative to the line of sight.

The old Army Metro or modern ICAO atmosphere can be specified. ICAO will always provide better results at conditions above sea level and is the standard used by on-line web sites or weather station instumentation.

Gyroscopic Drift and Coriolis can be added to calculations for long range shooting.

Generation ScreenOutput Screen

Once a table of data has been generated converting it to inches, cm.,feet, yards, meters, MOA or sight clicks is as easy as selecting one of the items in the column pop-up headings. Select a range line in the table and a menu to calculate sight adjustment clicks, maximum game weight and plots. You can even change the output to model the effect of different sight cant angles or convert output to a "click" table. No other shooting software offers a user interface as feature packed as the Shooting Lab.

Game Wt ScreenMisc Screen

Fantastic Plots

Trajectory paths can be plotted to scale showing the vital zone and important range points. A sliding button on the range scale allows you to view the point of impact for any range. You can also plot wind deflection, target lead and bullet drop.

Ext Bal Plot

Or, cycle thru several parameters and plot up to 6 trajectories at a time, wind diagrams and more...

Plot Dialog Wind Plot

3 Ways To Calculate B.C.'s

Coef of DragWhen it comes to calculating B.C.'s, Shooting Lab separates the men from the boys. It of course has a data base of published B.C.'s for common bullets...but it will also calculate a perfect standard sea-level B.C. from 2 range velocities, and more. It can calculate the Coefficient of Drag (C.D.) so you can match bullet shapes to any of 8 standard drag models or develop your own custom drag model for antique or unusual bullet shapes.
Some bullet companies use the C.D. method to calculate B.C.'s. Just specify the "B.C. Basis" from a pop-up button menu (usually G1), drag thru lines of reasonable muzzle velocities for the bullet, and the average B.C. for those velocities is displayed in a field just above the "Calc. Drag Coef." button. This caclulated B.C. should closely match the manufacturer's, ...without chronographing loads!
Click the "Plot" button to see a plot of the drag for your bullet overlayed on standard drag models. Then slide the plotted bullet data up and down using arrow arrow buttons to find a perfect match.

The below example calculated for a "VLD" bullet shows 'G7' is the best drag model and you can convert "G1" based B.C.'s to G7 or any other model. If there is no good match among the standard models, simply return to the analysis view and click the "Post" button to create a "Custom" drag model for your bullet shape. No other software offers the fexibility of simply looking up B.C.'s from a table or development of your own bullet data for the way the bullet shoots from YOUR rifle. The Shooting Lab will accurately model trajectories to 1000 yards that are within inches of the "Real World".

Drag Models


The Shooting Lab will download strings from your CED or Chrony brand chronograph and analyze the data. Post the results to load records for quick retrieval by simply dragging the text. The velocity data can be used to calculate perfect sea level ballistic coefficients for bullets as they are fired from your weapons using the "Two-Range Data Set" option.

Chron Screen

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