Hi folks! I am putting in an order with PT&G for a bolt I will be using in a 7mm Rem Mag build (Krieger barreling) using a donor Model 700 long action receiver. I have a few choices of extractor for PT&G to install. They tell me that many choose the M14 or M14 mini extractors but I am hoping for more precise guidance for the "why" and "which" for my specific build. My google-fu may be getting rusty, but I've not found any helpful info on the different extractors. Thanks and happy holidays!