I had my heart set on building a 257 Roberts but the action I was building on has moved to a new home and I am now thinking 260 Rem or 6.5/284. Does anybody know if Savage uses a long action and cuts a longer throat for their 10/16 series for the 6.5/284? I would rather have it on a long action with a long throat for velocity gains otherwise a 260 would do just about as well. Thanks for any information you can share.