TSS is expensive as heck, but worth every penny. I had my son shooting the Federal TSS #7s (3" 20g) for this spring and he almost decapitated his bird at 16 yards. His Weatherby is finicky, though, and won't consistently eject loads moving under 1200 fps. Federal TSS is 1150 and it didn't kick the next round in the chamber. I had him pattern and test an Apex 3" 20g with #9 shot and it put 60 pellets in the kill zone at 30 yards, as well as ejected the spent case and loaded the next round. I'll be switching my 3.5" loads to Apex next season.