This is a discussion on Charge weight?? within the Reloading forums, part of the Defensive Ammunition & Ballistics category; I am trying to use a ballistics calculator that lets me compare recoil of various guns/ammo .[ http://www.jbmballistics.com/cgi-bin/jbmrecoil-5.1.cgi] It asks for "charge weight". I have ...
I am trying to use a ballistics calculator that lets me compare recoil of various guns/ammo.[http://www.jbmballistics.com/cgi-bin/jbmrecoil-5.1.cgi] It asks for "charge weight". I have no idea were I would find that. For instance, what would that be for a typical 9mm Lugar 115 gr. and 147 gr.? I assume the 115 gr and 147 gr are the bullet weight. Am I correct? What difference would there be between standard load and +P?
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With so many variables from powders to brands, etc., you'd almost have to pull a bullet from the round in question, weigh the powder, and go from there. But 5.0 grains of HP-38 isn't going to have the same recoil as 5.0 grains of Bulleyes, or any other powder for that matter. Most commercial brands don't list the powder type used.
In the end, numbers are just numbers. Heavier guns absorb recoil better than light ones. Heavier bullets recoil more than light ones. Heavier charges recoil more than light ones. You won't know what's acceptable to you until you try it.
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