I have been reloading shotshells for about 67 years and have never switched dies, except one time switching a .410 PW 375 to 16 gauge, and I left it that way for 40 years, and loaded tens of thousands of .410 on an 800B, and thousands of 16s on the 375. Like KY Jon, I like to walk up to my bench and start to pull handles, not change dies.