Well,
After my post, I also put a call into Sierra. I went to their web site and found out they have a toll free phone number and "bullet guys" that are there from 8am to 8pm and they do nothing else but answer questions about bullets. Not just sierra bullets, (but I think they would really like to chat about their bullets) but all bullets. Really nice people and full of good information.
So, I was tellin this guy about my T\C and what the T\C guy recommended. He said that was a good recommendation, but when I was telling him about my test shootin two different loads he stopped me and ask if I cleaned the barrel between each shot. I told him no, I didn't and I was alternating shots. One Nosler then one Sierra. He then told me I committed a cardinal sin of load testing. NEVER shoot a different bullet\powder combo unless you clean the barrel first. If you don't clean the barrel first, you will get (what I got) very bad groupings. Lesson learned!!!
So, anyway, I picked up a box of Winchester 100 grain softpoints. I shot those (target on the upper right), cleaned the barrel...then shot the Nosler 80gr with BL-C2 (target on the upper left), cleaned the barrel...then shot the Sierra with 4895 (target on the lower left).
The factory load did "OK" but the Nosler seemed to do pretty well. I think I can get this tighter if I mess with the OAL. Noslers are fussy about the OAL and will group quite differently with just a five thous. seating difference.
So, the barrel does shoot the MOA as promised by T\C. I know with some additional work I can get this to tighter groups. It took me about 2 months to get my factory T\C .223 to get a 4 shot group that can be covered by a dime at 100 yards.....but I finally got it there. When I miss a groundhog with the .223, it's not the gun's fault.
Here is the pic:
http://i12.photobucket.com/albums/a212/davemuzz/withfactory.jpg