I think you're right about the extra swing distance, cast. And there's nothing wrong with a dull edge on your maul head. I say, the duller the better. You're not trying to cut the grain, but shock it into compliance with blunt force trauma.
If you want to work with a short block, velvet, try cutting a stump down and using the resulting 3- or 4-inch piece. Stumpwood is a lot tougher than regular stemwood, so it should hold up longer. I used to use a piece of elm like that, for obvious reasons. But I found that as long as you're not hitting too hard and too directly, a short block will last a good long time.
If you want to work with a short block, velvet, try cutting a stump down and using the resulting 3- or 4-inch piece. Stumpwood is a lot tougher than regular stemwood, so it should hold up longer. I used to use a piece of elm like that, for obvious reasons. But I found that as long as you're not hitting too hard and too directly, a short block will last a good long time.