Predicting bedload sediment transport is central to applications ranging from hazard assessment to reconstructioning ancient climates on Mars. Yet existing transport models remain imprecise. A key source of uncertainty is grain shape. Recent work by Deal et al. (2023) introduced a shape-corrected transport law demonstrating that natural grains exhibit transport and flux behaviors that differ markedly from spheres, which are often used in experiments. Building on this work, I am analyzing videos from their flume experiments to investigate how grain shape affects the mechanics of individual entrainment events. These findings will provide essential ground truth on grain-scale processes, thereby improving sediment transport predictions across Earth and planetary environments.