I have used their Blackout which is very close to 1680, consider it a hot lot of powder. I back off about 3-5% if the load is close to max. It seems to burn cleaner in light loads.

Heavy pistol has been a direct substitute for #9. But that may differ in loads with heavier charges. I don’t load anything over 10 grains, usually closer to 8.

Their available data sucks. More is available if you cross the Shooters World name back to the Lovex number and use Lovex data. Many of the Lovex numbers are also in the Quickload data base.

I like the powders I have tried and cost is generally a few dollars less than most other brands.