Step 5 - Refer to the .44 Magnum as the .429 Magnum
At least you should give them the benefit of the doubt of an extra .001 inch and call it a .43 Magnum.
Hahaha! I can't -- they simply need to face the reality of its diminutive stature.
Just kidding!
Kind of like when someone tells me about his S&W 50, I tell home that my handguns are .51 cal.