Ditto to what he said. My friend George used to shoot the Sierra 125 grainers from his .300 Win Mag and me from my '06 at jacks in Wyoming.
His loading technique was to pour some IMR4831 (or maybe H4831, it was over 30 years ago) into a shoebox, dip the case in to fill it to the brim and seat the bullet.
A lot of jackrabbits fell (or flew) to those 125 gr Sierras.
That would definitely be an accurate description of the terminal effects!
