I recently put together a Bighorn Origin using a shouldered pre-fit from PVA and have been happy with it but I am looking to switch up calibers and see quite a few used barrels for sale that have the Savage small shank. I know that is the same thread as the Origin action, but my question is with the Savage style barrels is a nut required or will it just need to be torqued on like my PVA barrel? Hope that makes sense