Ballistics and Twist Rate Stability Calculators
BY PGFThanks to @Georgiaboy61 in comments for mentioning Bryon Litz. A simple search found some useful calculators.
Berger Bullets has these Bryan Litz Ballistic Tools, including a Twist Rate Stability Calculator and this Ballistics Calculator. Included is the Applied Ballistics online Ballistics Calculator, which has more fields providing greater data granularity. Applied Ballistics also offers a desktop Ballistics Analytics Program. We hope you find these tools useful but if readers know of other valuable tools for reloading or shooting, please weigh in.