Real quick. I have some IMR4064 and decided to make up some .308 rounds with it. I'm using Lake City Match Brass and 168gr Sierra BTHP. I loaded 42gr of the IMR4064 and noticed I'm crunching the powder at the very bottom of the bullet seat. Could that create an over-pressure problem? I stayed well below the MAX according to my book but I also realize LC Match Brass is thick and therefore holds less powder.
What say ye...
What say ye...