Still studying, from all accounts palmetto 20 inch is accurate but looking at the Grendel forums ... so many options . It being the only long range /hunter I will ever build I will forgo my cheap bastard motto and spend some more if needed!! Let me know if you find something off the charts.After long thoughts, I think that's going to be my next build. Full up on the under 100 grain calibers, need to build something in the lower mid range 120 grain or so. I have everything in the parts bin except the barrel. What barrel manufacturer are you looking at?