Here's a few pics of my newly assembled Remington Sendero SFII in .300 Ultra Mag. As you can see, it's wearing some Defensive Edge hardware... the .875 break up front, and the marvelous DE adjustable cheekpiece on the rear. The fine old Leupold Vari-X Tactical 4.5-14 with Mil-Dot sits in Warne (we'll talk more about that later) rings and bases. The DE muzzle break does wonders... although the 240 SMK loads stil buck bad enough to shear off two of the screws on my Leupold PRW rings.
I've only had the gun out once, but it's done nothing that would cause me to doubt its potential accuracy. 5-shot groups with initial loads (5 different bullets) all hovered around an inch, and the 210 Bergers shot around 1.5 MOA at 600 yards in a very tricky 15+ mph wind.
I truly enjoy this site, there seems to be quite a bit of excellent experience/advice flowing freely. I considered a great deal of the advice posted by a number of members here when I put this rifle together... and some excellent advice from Shawn Carlock, who's a great guy by the way. I look forward to sharing my long range experiences here too. Thanks to all for helping.