See that's the thing I have similar results without lapping or bedding. Haven't used a Larue but Faxon and Ballistic advantage shoot close to MOA with factory SMK loads. I've got a WOA barrel that shoots lights out with 77 SMKs. I've also got a 224 Valk with an ARP barrel and a 6mm Creed with a Brownell's barrel (I think they're Krigers). That both shoot 1/2 MOA ish with factory ammo. So I just wonder how much it helps. I only use handguards that clamp to the barrel nut anymore, no shims just torque the nut to spec and go.