WebApr 7, 2011 · For the less eager, there are several approximate methods of calculating the required spin for a bullet. The simplest is the old Greenhill formula: T = 150 / L. where T is the twist in bullet calibers, and L is the length of the bullet in calibers. Unfortunately, it's not a very good method, but I include it here to show that longer bullets ... WebAug 16, 2015 · I was bored today and decided to discover the commonality of each "most accurate" load from Nosler's Load data. Made up this excel spread sheet to calculate the …
JBM - Calculations
WebMar 26, 2024 · Go to the Berger Bullets web site and find their Barrel Twist Calculator. Fill in the info asked for and it will tell you if the bullet/barrel twist combo is stabilized or not. Pay attention to the elevation portion as your bullets will be flying faster with more elevation. 4000fps is 4000fps is 4000fps, regardless of elevation. FeMan WebSep 6, 2015 · On the updated Berger Bullets website you’ll find a handy Twist-Rate Stability Calculator that predicts your gyroscopic stability factor (SG) based on mulitiple variables: velocity, bullet length, bullet weight, barrel … the viking throne archive of our own
How To Find the Ideal Twist Rate for Your Rifle
WebBullet Drag and Twist. Calculates the bullet CD, and CD components, BC required twist and stability for input twist. Inputs required are the bullet measurements including nose … WebFrom Barrel to Target. External ballistics deals with the performance of Hornady bullets from the moment they exit the barrel until the moment they arrive at the target. We are not concerned with internal ballistics, the province of the firearms engineer or powder chemist, nor with terminal ballistics, the province of the forensic pathologist ... WebBarrel Twist Calculator A Calculator for Barrel Twist Rate Notes The classic Greenhill equation is T' = 150 / L' where the twist and the bullet length are in calibers. Removing bullet diameter from twist and length gives the equation often found: T = 150 * D^2 / L the viking silent film