I think I understand what you're saying. I always thought the shouldered portion of the barrel was made roughly long enough to cover the chamber area to not be a problem. I could be wrong though. I've always questioned, on a Remington, the portion under the recoil lug (for larger chambers). There you've got the small shank, essentially, with deeper threads than a savage, that's neither inside the receiver nor part of the shoulder. That's probably really overthinking it as I've never heard of any problems with them.