I tried them in QuickLOAD with 180 and 200 grain bullets. Even filling the case 100% (no compression) neither could get past 11,000 psi nor past burning only about a third of the powder in the gun. The rest went out the tube. In reality, these may well squib out. The powder burning volume behind the bullet grows too rapidly with bullet movement to let that small quantity of powder get burning thoroughly
I also have some H110, and emailed that company, to be told it is NOT a suitable powder for .40S&W



























