I've got an alloy framed Kimber Custom Shop Pro Commander with the Bobtail grip frame. Tons of lead downrange with not one problem at all. Feed ramp is still as smooth as a baby's butt.

Sounds like a internet myth to me.

"Allways speak the truth and you will never have to remember what you said before..." Sam Houston
Texans, "We say Grace, We Say Mam, If You Don't Like it, We Don't Give a Damn!"

~Molɔ̀ːn Labé Skýla~