Originally Posted by ldmay375

Excellent to see a BC breaking .400 for the .458. !!

Are these designed for 80% bullet weight retention ?

Sir Larry,
Yes, that is neato on the BC.
Theoretical weight retention in complete bow-off of petals down to squared off at bottom of hollow point: 64%
That was determined by putting one on a bench grinder until 100% meplat appeared at base of the HP.
I will shoot some into 25-yard water buckets at various velocities, like 1600 fps, 2100 fps and 2600 fps MV,
from the mighty .458 WM and .458 WM+ for starters.
Seeing when the petals start to open up and when they come off completely may require further testing.
Every other copper monometal HP seems to act like that.
Will see if Shock Hammers behave any differently,
like brass HP will blow off petals at low velocity and essentially same at high velocity.

With about 1/3 weight in petals as secondary missiles and 2/3 weight in FN solid cylinder shank penetrator,
with a little boat tail at the other end to shift CG forward,
or a mushroom with greater weight retention and frontal diameter ...
either seems to be a recipe for success.


Ron aka "Rip" for Riflecrank Internationale Permanente
NRA Life Benefactor and Beneficiary
.458 Winchester Magnum, Magnanimous in Victory
THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.