What do you intend to hunt? Big difference between a whitetail doe and a boar brownie! Personally I wouldn't use a hollow-point pistol-bullet on game, preferring the heaviest JSP available for the calibre, within reason. In the .44 Magnum, this means 260 to 300 gr Soft-point bullets designed mainly for the .444 Marlin.

In your 629, 265gr or 270gr SP bullets are probably the best choice, leaving the heavier 300-grainers for the long-barrel Black-hawks. Slower powder will be needed in either case.

If you still prefer the 240-grainer, take a look at the Nosler SP offering. I really like that bullet in the .44 but we don't see it much in Australia anymore. Bit light for big hogs anyway.

Sierra's 300gr offering by way of example:

BTW, where do you live Eland Slayer? I'm assuming the US. If you update your personal profile to show country, these types of questions may be better answered for you.