1+ on the Hornadys, either the XTP or leverevolution. Also try the 240 gr Winchester JSP (standard white box available at Walmart etc). They also measure .430" diameter. My 44 is also slightly large (.431" diameter) and the Hornadys and Winchesters shoot well-enough for deer hunting (3" group at 100 yd). Hardcast .432" bullets can shoot more accurately, but are not necessary, and if I push them to the same velocity I tend to get leading of the barrel, which I don't care to mess with. I do use .431" diameter cheap lead bullets for plinking, but load them to much lower velocities than I would use for deer hunting. Hope this info helps.
Duane