I have Lee TL401-175TC boolits cast with range scrap and 4% tin sodar, then powder coated, sized to .401, they weigh c.180gr. And I have a lot of HS6, and a few other powders. I don't have a chronograph. I need to come up with a load around 800fps that works the slide on a 1911 and hits what you aim at. Thought?