Originally Posted by Riflecrank
Do I hear a second to the motion to accept the WOODLEIGH BULLETS LOADING MANUAL, 2014 edition,
as the BENCHMARK benchmark for .458 Winchester Magnum,
with bullets from 400 grains to 550 grains ?

Reference to that data will be used for comparison of any rifle shooting same BENCHMARK load
without regard to ambient temperature.
By extension, other bullet makes of same weight may be considered for effects on MV.
Ditto for effects of differing seating depths.
Ditto the effects of shorter and longer barrels.
It is a place to hang the thinking caps of the Knights of the Square Table.

I'll second you RC!

Man, you definitely have that old 458 sorted out. Really a great thread.

Semper Fi