**For stability and leveling, 5/8-minus crushed stone is a good choice on a well-drained site.** Its angular pieces interlock, and the smaller particles fill gaps so it compacts into a firm base.

The distinction is the stone’s shape and grading:

- **Rounded gravel**, such as pea gravel, shifts under load and is a poor choice beneath skids.
- **5/8-minus crushed stone** compacts tightly but drains more slowly because it contains fines.
- **Clean angular crushed stone**, commonly 3/4-inch, drains well and also supports shed skids. Shed-foundation contractor [Site Prep recommends this material](https://www.siteprep.com/articles/how-to-install-a-gravel-shed-foundation/).

For a typical small shed, remove sod and organic topsoil down to firm ground, then install roughly **4–6 inches of stone**, compacted in thin layers. Keep the finished pad above surrounding grade, provide an outlet for water, and support the skids evenly along their length. Soft or wet soil may require additional preparation. [South West Butler Quarry’s guidance](https://southwestbutlerquarry.com/decision-guide/) supports that depth and the choice between clean stone for drainage and minus stone for greater firmness.

I can’t see the “like this” example, so if your uniform gravel is **angular clean stone**, it’s a viable option too. For wood skids where drainage matters most, I’d favor clean crushed stone; for your stated priority of firm leveling on dry ground, I’d use the 5/8-minus.