The copper 404-g/.458 weighs 403 grains and is 1.440" long.
Make it out of brass and it would weigh 394 grains.
My maths tell me that it would need to be lengthened in the full bearing base section below the last PDR band
by only 0.028" to weigh an actual 404 grains.
404-g/.458 "Brass Hammer" BOL = 1.468". LOL

I plan on trying the 404 Shock Hammer at 1700 to 1800 fps first, for low velocity expansion.
If it won't expand at 1500 fps impact with water, will try the chamfer sharpening of the HP edge.

Doc M of MIB has done a priceless service in testing the 404 Shock Hammer.
I do not expect he has anymore interest in the TSX bullets.
But I do !
I will be taking the Iron WaterBoard Buffalo out of pasture to ride again.

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First for a calibration run to compare to the MIB score of the 404-g Shock Hammer with high BC.
Then a ride with the 450-gr and 500-gr TSX bullets.
I want to see if the 500-gr TSX goes squirrely,
and see if the 450-gr TSX goes deeper than the Shock Hammer.
Compare it to the 402-gr/.458-cal "90%" retaining Shock Hammer of low BC also.

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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.