Remington UMC 180gr semijacketed softpoint .44 mag is what I chose for my 629 PowerPort; for whatever reason, when I am shooting out to 50 yards (offhand, single action, open sights) I get smaller and more consistent groups than with stuff like Federal American Eagle 240gr sjhp and Hornady XTP 240gr jhp; it is readily available at WalMart, Bass Pro Shop, Gander Mountain, and a few mom-n-pop shops in my area
I use MasterCast remanufactured 240gr lead semiwadcutter .44 mag for volume practice since it is downloaded and costs less than factory new stuff; I like Hornady XTP 300gr jhp, but they aren't stocked in my area on a regular basis; I have shot Ultramax new manufatured 240gr lead semiwadcutter with consistency, but again they aren't stocked in my area on a regular basis;