Malamute,
In an effort to keep this positive, and educational, it reads like you have personal experience with 10mm hardcast loads not working in a Glock platform. If this is accurate, would you be so kind as to share the specifics of what you have tried, please?
Brand? Bullet weight? Bullet shape? Powder charge? What malfunctions did you experience?
If you tried some, and they worked, would you please share that as well?