RSI Lab - Exterior Ballistics

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Exterior Ballistics:

Calculates Drop, Path, Velocity and Energy at different firing angles.

Also, Point Blank Range, Vital Zone, Near Zero, Mid. Trajectory Range & Rise, Far Zero Range, Elevation, Windage and Target Lead at metric or yard ranges.

Ballistic Coefficients are adjusted for atmospheric conditions

Plots Path & Drop, Windage, Target Lead and a traditional Wind Diagram

Calculates ballistic coefficients using velocity or bullet dimension

Duplicates published ballistic tables

Calculates the practical game weight for loads

Calculates vert. and hor. sight cant error at zero range or for entire path

Converts Minute of Angle output to sight clicks for user specified arms

Includes 8 air drag models (G1, G5, G6, G7, GL, GS, GI, RA) plus the

ability to develop your own custom model.

Calculates the Coefficient of Drag (C.D.) for bullets

Convert (C.D.) to Custom drag models and B.C.'s for any drag model

Unlimited range and step size

Calculates trajectories in yard or metric ranges

Calculates trajectory for a known zero or impact height at a known zero

Calculates optimum zero range from specified vital zone

Saves parameters to disk for quick recall and setup

Exports tab-delimited data for use with spreadsheets

Automatically access stored load information (as entered by user)

The Shooting Lab's Exterior Ballistics segment has more features and a fully developed user interface. You have greater control of trajectory parameters with 8 drag models and more range and condition options.

Specify the impact height at a specific range or just the vital zone and the program will find the maximum point blank range for the load and even tells you what zero range to sight the gun to achieve the maximum point blank range.

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. Simply select any range line in the table and then a menu to calculate sight adjustment, maximum game weight, and other trajectory factors. 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.

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.

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

3 Ways To Calculate B.C.'s

When 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 their 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".

Extras

The Shooting Lab even includes a special window that 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.