Max, I use that spoon for casting round ball and for .357 SWC bullets. It works fine. I'm sure that a Lyman ladle designed for the purpose would work better, but my whole goal was to make my own bullets as cheap as I could possibly make them. I got all the lead for free, I had the fryer set-up already. The spoon, pot and muffin tin mold were all donated by my lovely wife. (boy that took some explaining!)
So you can spend money on ladles and that will work well, or you can go the cheap route and that way would work well too.
btw...I did buy one of the Lee ladles, and I never use it. It is too short to be able to get a good scoop of alloy unless the pot is almost full. You have to angle it down so far to scoop the lead that most pours out when I lift it. My spoon works well with a pot of lead that is only 1/4 full. I don't know how long the Lyman ladle handle is.