Ammo has to :
Fit into your magazine.
Pass the plunk test using your chamber as the gauge .
Feed from magazine into chamber.

The book oal Hornady used is not written in stone , it's just a starting point . To test function load up a few dummy rounds and manualy cycle them from magazine into the chamber and chamber properly and then extract . Adjust bullet seating depth as needed .
If 1.230" seems too deep test a few at a depth that seems just right and see how your gun likes them...might be just the ticket for your's .
Every pistol is a law unto itself ... what feeds fires and functions in your gun may choke your buddies gun .
Gary

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Certified Cajun
NRA Member