The SAUM has been working well for me, I'm planning to shoot an ELR PRS match in Wyoming in a few weeks, the targets will range from 500-1800yds. I'm debating whether to take the SAUM or the 338LM, the LM shines out past 1000yds but you pay for in recoil.

Another cartridge that's been shooting well for me is the 243 30deg improved. With H1000 and the 115gr DTAC its not too hard to shoot groups that are hard to measure they are so small. Accuracy has been great out to 1400yds.