Old fashioned scrapers were first squared ( that is, making sure the edges are 90 degrees) and then a slight bur is rolled on the edge, to give it a bit of a hook. They work very well, and seem to be less likely to create low spots. They are a little tricky if you mount your furniture, and then decide you still need to remove more wood. The pin holes that hold the pins, that retain the furniture, can cause the scraper to leave a slight groove, if particular care isn't taken, which will show on the finished gun.
Hungry Horse