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Old January 18, 2010, 08:51 AM   #30
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Join Date: February 9, 2006
Location: Homes in Brooklyn, NY and in Pennsylvania.
Posts: 5,263

The 300 hp can and I have loaded to 55 gr rx7. My handi rifle shows no pressure signs with that load.
I use a similar level load with IMR 4198. The problem that we face, though, is that cases like the 45-70 may not show any signs of overpressure even though they are.
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