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Old 11-04-2020, 11:24 AM
navyrifleman navyrifleman is offline
 
Join Date: Oct 2009
Posts: 1,124
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A very interesting calculator, indeed. I have never used one, but it appears to be somewhat similar to Air Navigation computers that I have used, with a number of variables that need to be input or calculated.

With the Speer calculator shown in the previous post, note that a major input necessary for its use is muzzle velocity. This would require a device which could measure muzzle velocity for your specific rifle and load in question. - OR you would need accurate muzzle velocity information which had been compiled and included in your reloading manuals.

Any published muzzle velocities would be for a specific barrel length, and so stated in the manual. Your barrel might be longer or shorter.

Muzzle Velocities are sometimes listed in Reloading manuals, but usually only for a specific recipe (starting or maximum). More often, only chamber pressures are listed.
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