I use a Colt Delta Elite 10mm and always have a shock buff in it. Metal pounding Metal is never a good thing for a long time. I like to practice and carry my 10mm. Every time I shoot I then clean it. If the buff is showing signs of significant wear I toss it and throw in a new one. I have never had a torn one and it is physically impossible for me to have one in my gun because I clean and check it after shooting.
"Religions are all alike - founded upon fables and mythologies." Thomas Jefferson
"The way to see by faith is to shut the eye of reason." Benjamin Franklin