I just did a Yo Dave trigger job on a 452. Amazing result! Horrible trigger became a great feeling one for 18 bucks. I bought a Timney for my old 455. It was no better feeling than the Yo Dave converted factory 452 trigger. We will shoot the 452 this weekend. I bought a Kimber 82 this weekend. Would not be surprised if the 452 out shoots it or equals it. My 452 17hmr outshot my heavy barreled 1717 Anschutz.