Warning: Unless you own an H&K USP or Mk23, do not shoot .45 Super through your stock .45 ACP pistol. You risk a ruptured case due to improper lockup of the barrel and receiver, due to the increased inertia from the stronger loads. The H&K's are designed to handle the increased pressure from .45 Super. My Ruger P90 shoots them barely, and I am currently reloading using .45 Super brass from Starline. I haven't had a chance to shoot them yet, but I will let you know if you are interested.
My dream gun??? A .45 Super pistol...
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.45 Super... Fat and FAST...
"No provision in our Constitution ought to be dearer to man than that which protects the rights of conscience against the enterprises of the civil authority" - Thomas Jefferson