Those are very good for a first session. Very shootable. As you do more casting, you can vary lead temps up or down a few degrees to find the sweet spot as each mold likes a different temp to work at.
Here is a link to a free to read and download for personal use resource for casting bullets:
http://castboolits.gunloads.com/showthread.php?t=110213
That is some very valuable info, and my own casting has improved.