Rick by looking at the picture in a post above, the bucket mount is flat on the ground and by the looks of the cylinder it appears to be fully extended (or very close).
Now if you pick up the loader arms about 30-35" that approximately equals the "floor" length of a bucket and add in the arc of those short loader arms AND the built in angle in the bucket.....
I can see where you have a problem and where you only have about 45* full dump at ground level.
I've never mastered the search feature here, but do a search and mention the tool category section and see what you can find.

And welcome to TBN!