I have a Savage 12BVSS in .243WIN on layaway.When it comes out it will be re-chambered for .243AI. My question is will the Stoney point OAL gauge still work with it? They sell a modified .243WIN case but not a .243AI case. If I am thinking right the re-chambering to AI from WIN the only real change is shoulder angle and capacity so the standard .243 case should work. Right?