I agree with you on that SP, I had available PMC but did not use it in my test, because to have an "apples to apples" old -vs- new comparison I stuck to all 130 grain FMJ, and the PMC was 115.

The 130 is the only kind of truly old ammo that can be found, and when you said "old" I assumed you were testing stuff 70, 60, 50 etc. years old, not something as recent as the 1980's .