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Does anybody have load data for ss109 with benchmark for. 223
Thanks
I'm not suggesting you use this data but, Nosler #6 shows 21.5 to 23.5 grains of Benchmark for their 60 grain Partition...I also use this data for their 60 grain Ballistic tip in 223's. your bullet is longer I would start low.
I have loaded Hornady 75 grainers at 22.5 but I started at 21.5
 

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problems logging on...hodgdons max for Sierra's 63 grainer is 24.2 grains of Benchmark

63 GR. SIE SP Hodgdon Benchmark .224" 2.200" 22.0 2845 41,800 CUP 24.2 3066 50,500 CUP
 

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Jul-08WinchesterSmall RifleLake City.223 (.224 Dia) 62 gr - SS109Hogdon'sBenchmark24.00Lake City1.762.222864 30.70
Mar-10WinchesterWSRLake City.223 (.224 Dia) 62 gr - SS109Hogdon'sBenchmark25.50Black Hills1.752.23305812.357.2132.00
Mar-10WinchesterWSRLake City.223 (.224 Dia) 62 gr - SS109Hogdon'sBenchmark25.00Black Hills1.752.23300940.5221.5633.00
 
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