59FLH, I have a 220. What do you mean about the front base screw? Tryed all brans of ammo ,just does not seem to want to shoot well. I have a Nikon Slug Hunter on it. Thanks
Had the same problem, I tried Rem, Fed, Hornady, Fusion, etc, it was not as accurate as advertised. Changed mounts etc, I even sent it back to Savage, they shot it and sent it back with the test target. I scratched my head and went to work. Turns out the screws in the packages of the bases I tried were a few threads to long. The front screw on the base was bottomed out on the barrel and not holding the base. I trimmed 2-3 threads off the front base screw and solved my problem. I now shoot MOA or better with 3" Rem Accutips. Savage was great about it, give them a call if you don't get it sorted out, they can and will help.
I started with a Weaver base, and moved to Leupold bases, even changed scopes. That's when I contacted Savage. After my discovery I concluded the screws most likely work on small shank Savage, but must be a bit to long for large shank.