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**Unclenick** · July 9, 2021, 05:23 PM

I have seen primer difference documented to make up to 10% pressure difference in 223 with that bullet weight, so I would run a starting load. That's fine for plinking, anyway.

July 9, 2021, 05:23 PM	#16
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,061	I have seen primer difference documented to make up to 10% pressure difference in 223 with that bullet weight, so I would run a starting load. That's fine for plinking, anyway. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle