Probably no bad bullets choices in your 625, I've owned 6-8 of them & everyone has shot great with many different bullets. Shot them in competition all over the country & they are amazing revolvers. Powder choice is probably more of an issue & if you are competing you will have to use Federal primers if you want to have any chance of winning. I used 231 & WST almost always in my guns.
A good all around bullet for everyday use is the Miha 205 gr. RN HP, absolutely no need for a GC (my opinion) in 99% of revolvers with correct alloy. Very few people can shoot the difference.
Dick