I was once given about 180 pieces of 6mm Remington brass. All was headstamped "R-P." When I began to evaluate it I could see that it all came from at least three different eras, based on subtle differences in the font or style of the headstamp. As it turned out, there was variation of about 20 grains between the average weight of each type. I'd call that considerable.

Don't be the darkness.

America will perish while those who should be standing guard are satisfying their lusts.