Anyone with a good handle on bullet casting, knows about bullet hardening and tempering along with what alloys are necessary for the best results.

Ross Seyfreid took this to the next level, you might say, by using a 5 shot Linebough'd Ruger revolver to kill a Cape Buffalo.

Properly prepared, a WW alloy bullet can give virtually identical results to the best of the lead/guilding metal covered/steel jacketed bullets at speeds up to 2,000fps or 2,100fps - perhaps faster.

By tempering the bullets after hardening, you can achieve almost any level of penetration/expansion you want. Another option is making soft-points of various dimensions of 'solid' and soft sections. It's actualy quite marvelous, what can be done.

If interested, buy Veral Smith's book "Jacketed performance with Cast Bullets". I bought my copy in 1978.

He was actually driving soft points at 3,200fps and obtaining vertually identical performance to 180gr. Nosler Partitions.