Hopefully once the creek rises, you will be able to run the Iron WaterBoard Buffalo test on the 404 Hammer, high and low speed. If time permitting, perhaps the 380 grain Lehigh copper flat point.
That Lehigh may have some potential for respectable velocity. Using the straight edge method it appears the .458 diameter begins at the first band. It would appear that the wide meplat would enhance significant tissue relocation at 2000 fps and above impacts.