I've been stuck at 297 and 3/4 for 3 days. I have a 300 blue auto rifle and my other 296-298 gear has all came from infused blues as well. Lately all my drops are in the 260-270 range.( if I use a Antiquated Rune and get the drops, they go up to 280'ish, but are of no help) beaten Tier 3 COO several times, crap for drops. I have 6 exotic engrams in my vault waiting until I hit 300. It's starting to look like I'll never get to use them lol. Gotten up to the 2nd raid boss, even every chest and secret along the way, no drops to help, all moldering shards.