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Calculating charge for different bullet weight

 
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  #1  
Old 02-04-2012, 09:50 PM
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Join Date: Mar 2011
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Calculating charge for different bullet weight

Shooting a 500 A-square and all the reloading data is for 600 grain bullets. Will be shooting a 570 grain bullet instead. Does anyone having reloading data or is there a scientific method of calcualting theortical charges based on the reduced weight?
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Old 02-05-2012, 05:20 AM
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Location: Central Ohio
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Re: Calculating charge for different bullet weight

Percentage wise, the difference between 570 and 600 grain bullets isn't much so you could start load workup in the upper part of the lower half of published date for 600 grain bullets as long as bullets are of similar construction.
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Old 02-05-2012, 10:11 AM
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Re: Calculating charge for different bullet weight

I was looking for a little more specific data. I dont want to shoot a bunch of rounds experimenting. looking for a safe load that will obtain 2400-2500 fps. A-square data for a 600 grain bullet is as follows:

H-4895 106.0 Avg Velocity 2346fps
H-4895 115.0 Avg Velocity 2474fps

IMR-4064 112.0 Avg Velocity 2380fps
IMR-4064 117.0 Avg Velocity 2503fps

RL-15 113.0 Avg Velocity 2316fps
RL-15 118.0 Avg Velocity 2467fps

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  #4  
Old 02-05-2012, 12:29 PM
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Location: NC, oceanfront
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Re: Calculating charge for different bullet weight

You need 'QuickLoad'
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