I met a fellow whom was getting me started with reloading. I was able to pick his brain for two months before he passed away at age 75. He had been reloading since he was 16 and taught his children and grandchildren how to shoot and reload. (sorry off subject) Anyway he had friend (82) whom is a retired gunsmith that years ago told him to use a dab of STP for lube and he used it for years. Has anyone out there had any experience with STP?