elderair: Like oldmac the Kimber UC is my primary CCW. I also have two springs, one for the range and one for everyday carry. The reason I do this is because I go through so many rounds at the range I didn't want the spring to get week and if I ever needed my weapon I need to make sure the spring would be up to the challage.
At the range I use stardard ball rounds and for self defense I use pow er ball rounds. I really love this round, I switch the rounds out from summer to winter. The summer round is a lighter round then the winter round. The winter round is a heavier load because of the extra clothes we wear, I want to make sure I can get to you if I need to.
Have fun with the Kimber, and remember if you take care of it; it will take care of you. Enjoy