Fellas,
I need some direction here. I have Sierra's latest manual (Number 5) and previously used speer's 13th edition. But of course, I have to compare them.
It seems there is conflicting information.
Loading the Sierra 168 gr. SMK I've discovered the following information:
Sierra Manual Maximum load is stated as IMR 4350 56.0
Same bullet in the Speer manual is showing 58 gr. Max load.
Can you please tell me how they come up with loads that differ by this margin?
ThanksInformation
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