03-26-2014, 05:51 PM
Well, for starters, you are creating an apples and oranges argument. There is no direct comparison between Custom rifles and SAAMI spec'd rifles. By their very nature, custom chambers, as you observed, have no hard and fast standards or specifications. A SAAMI spec'd chamber on the other hand, is designated such, so that ammunition manufacturers and barrel makers can produce compatible products. You are free to disagree, but the fact is that the specification for the Grendel chamber, as shown in the drawings submitted to SAAMI for approval, do extend to the throat.
When you take the discussion to the realm of gunsmiths, and custom builders, it is a design agreed upon between the customer and the builder. At that point, both parties come to an agreement on what the chamber will look like. Stock, factory chambers, on the other hand, allow the average consumer the comfort of knowing that the barrel will successfully chamber off the shelf ammunition marked for that chambering.
It really doesn't get any simpler than this.
When you take the discussion to the realm of gunsmiths, and custom builders, it is a design agreed upon between the customer and the builder. At that point, both parties come to an agreement on what the chamber will look like. Stock, factory chambers, on the other hand, allow the average consumer the comfort of knowing that the barrel will successfully chamber off the shelf ammunition marked for that chambering.
It really doesn't get any simpler than this.