Oldbloke wrote:"Tension on the Action / Barrel screws is also something I try and keep consistent to maintain accuracy."
I haven't tried that. But I have put some pressure under the barrel near the front of the forend. That helped a fair bit.
I havent tried different screw tensions.
Both screws are meant to be 20-25 inch pounds, do the rear one then the front. Made a big difference with mine.
Oddly enough mine shoots very well with some old PMC zapper I had, just as well as with SK rifle match