Well, it's been a long, tough road, but I've finally figured out my Kimber 30-06. I was having a heck of a time with accuracy, only getting 3" groups with factory Rem core-lokt 180 and 220 grn ammo, and 2.5" with Nosler Custom Competition 168 gr handloads. I tried about 5-6 different factory loads... dont remember them all now, but with very poor success.
Before giving up on a $1200 rifle, or returning it to Kimber (a real PITA), I decided to try Tubb's Final Finish bore lapping process. I paid about $30 on midway for it, and figured it was worth a shot.
50 rounds loaded and shot later, (with a LOT of cleaning in-between), I finally feel like I have a $1200 rifle. My first group was with HDY A-max 178, and it made one ragged hole (100 yds.). Next, for my hunting load was 180 gr. Barnes TTSX, which printed a .75" group at 2600 fps. with 56.0 gr RL-22, Federal 215M match primers, which was a starting load. I'll continue to work up to see what I get from there.
If you have a problem rifle, I highly recommend trying Tubb's Final Finish. It saved me a ton of headache, and also made the bore a cinch to clean.