Home Forums Hunting & Shooting Express Rifles and Big Bores Only The great 458 Winchester. Everyone should own one at least once

My bad, "IWBB" pictured above had typo in caption.
I meant to say "IWBE" with three boards per compartment.
That is the Iron WaterBoard Elephant for testing FN solids from a 50 BMG.



I will use IWBE in testing the 500-gr TBSS at +2300 fps MV as per Sir Jerry's load for .458 WM+.
Then, of course, I will cut that bullet down to 400 grains and test it at +2500 fps, in the IWBE,
expecting the 500-gr TBSS to go deeper, I just gots to know by how much.

IWBB with one board per water bucket works for softs.
IWBB with two boards per water bucket works for most FN solids.
Might require IWBE with three boards per water bucket for the .458 WM+ with 500-gr TBSS FN.
And I might eventually get to a .510/570-gr or 600-gr FN solid from my 50 BMG just for fun.