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Hammerhead · October 11, 2013, 02:55 AM

I would use them with your starting load.
From a CCI primer energy chart from the '80s:
#500 SP = 5.5 foot pounds.
#550 SPM = 8.8
#400 SR = 6.0
#450 SRM = 7.2

October 11, 2013, 02:55 AM	#14
Hammerhead Senior Member Join Date: May 31, 2004 Location: Minnesota Posts: 2,432	I would use them with your starting load. From a CCI primer energy chart from the '80s: #500 SP = 5.5 foot pounds. #550 SPM = 8.8 #400 SR = 6.0 #450 SRM = 7.2