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Cartridge Reloading Regression Analysis
Submitted by admin on October 22, 2013 - 4:22pm
Cartridge Reloading Regression Analysis Example Calculations Note: In the Table, Chart, and Spreadsheet, the red colored values are user entered values and the blue colored values are the calculated results. Shown in the table below are six (6) reloading combination values (Powder Weight [PW] / Projectile Velocity) taken from the Data Reference source for a .357 magnum 125 grain JHP bullet. To the right of these values is a table of calculated linear regressed values (Powder Weight, Projectile Velocity, Projectile Energy, Projectile Momentum and Power Factor) based on these Reference values. The R Value, in this case 0.99984, represents how accurate a straight line fit of calculated values would be to the original Reference values. As the R Value number approached a value of 1.0000, it means the calculated values become more accurate compared to the Reference values. The Linear Regression Equation in this case is Velocity = PW * 56.99 + 464.18, which represents the straight line fit shown in the chart below (blue plot). The Data Reference source values are shown in the red plot. In Addition, one can also calculate the Velocity and Energy based solely on Power Factor (Power Factor = Projectile Weight * Velocity). Microsoft Excel Spreadsheet Download Cartridge Reloading Regression Analysis Chart |