.357 shoots flatter than a .44 both work great on deer.
Hmm. Do you have any data to support this? I've seen several trajectory charts that are virtually the same for .357 and .44 mag for similar loads.
Ergo .357 does not shoot significantly flatter than .44 mag. There are significant differences between these two cartridges, but trajectory isn't one of them; not for similar loads anyway.