So does one actually own the instruments to make such determinations?
For whom it interests.
Do a little search IN Reloading Big Game Rifle forum,
UNDER Campfire Pet Loads find " Good 6.5x55 loads.
Our Denton posts a few loads HE has pressure tested.
I'm using 120 NBT- IMR 4350 - 3000 fps from Win 70, 22" bll.
It's safe in my 70.
Good Luck
Jerry
