I believe this site would be worth reviewing:
http://www.corbon.com/ Click on the "On-Line Store" then on the upper left side of the page they list various types of ammunition, just choose under Categories: CORBON Hunter.
I have used the same bullet that Cor Bon uses, the Barnes XPB(expanding pistol bullet) in my reloading. It is solid brass, opens quick, stays intact, accurate, produces a superior wound channel and pennetration---
http://www.barnesbullets.com/prodxpb-pistol.phpI have used the .45 cal. Hornady XTP in my .454 and saboted in my Remington 700ML, both 240g mag and the 250g non-mag. Neither "consistantly" opened or if it hit a bone to stay intact. Not uncommon to find jacket or base fragments in the tissue. Note, I use a chronograph and stayed within the bullet velocity specifications of the manufacturer for each accordingly. I have killed whitetails with XTP's but they caused me to look for something else.
Granted, I don't shoot a .44 but do believe that results will be similar.