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Load Increments
.257roberts
Member Posts: 54 ✭✭
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
Comments
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.
read this article.it is a great way to develop loads