Load Increments

.257roberts

January 03, 2009 11:24

Hello everybody, Am working on loads for my .220 Swift. I've read it on here before and can't remember whats best. Should I increase loads .3 grains at a time or .5 grains

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  Rocky Raab

  January 03, 2009 13:35

  There is no hard and fast number that is safe in all loads. A charge weight change that would go unnoticed in a 300 Win Mag would take a Hornet apart.
  
  So, rather than hard numbers, I have always recommended this method:
  
  From the book Maximum load, deduct 10% to set a Start load (the exception being those few powders where small or no reduction is recommended). Now, calculate 2% of the maximum and use that as your charge increment. Your test series of loads would use 90, 92, 94, 96, and 98% of maximum.
  
  You can round the increment up or down a bit if it comes to an amount that's difficult to measure. This system works with any cartridge and any book maximum charge.

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  ddhotbot

  January 03, 2009 14:23

  http://www.clik.to/optimalchargeweight
  
  read this article.it is a great way to develop loads

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