I have a Tang Safety M77 30-06 that my dad gave me for Christmas while I was in high school. It has killed its share of game, but some shots were just plain luck, apparently. It would never maintain any consistency as far as groups, save for "conistently" shooting 2 inches or more with many types of ammo. I bedded it, floated it, played with screw torque, put different scopes on it, all to no avail. I finally had a new barrel put on (Shilen 6 groove 1-10 twist, finished at 24") and thought for sure it would shoot lights out. Well, today at the range proved me otherwise. Still the same wild groups (from a lead sled, too) and a very disappointed shooter (me). I can shoot well, as I have many other guns that I consistently print less than an inch at 100yds, one specifically being my 5R mil spec Remington in .308. I know I'm a capable shot, and especially in a lead sled, this Ruger should be a tack driver. It's floated, bedded (glass, not pillar), currently with a Zeiss 3-9x40 atop it, and it won't shoot for beans. I've tried 168gr bergers, 168gr Barnes TTSX, 150gr Barnes TTSX, 165gr Sierra Gamekings, 150gr Nosler Btips, 165gr Hornady Superformance SST, Interbond, and 150gr SSTs....both with the new barrel and old...just won't shoot! I'm going to try some 180gr loads to see how they do in the 1-10 barrel, but I just can't for the life of me understand why this rifle won't shoot well, especially with a new barrel. Could it be that my action is at fault? It seems as if I've taken care of all other variables, except the bolt and action themselves. I'm considering buying a new stock for it as well, as a last ditch effort, but don't know what that would improve since my current stock is already bedded. Long story short, I thought I had all the variables figured out, but it's still shooting just as poorly with a new Shilen barrel as it did with the old Ruger factory barrel. HELP PLEASE!