I've read from others that 33 is very dirty and lots of carbon ffoulig. I haven't heard anything yet about LRT issues. Hopefully it's good, because I have 10# of it. LRT and 33 work better on the 270+ grains (less compression). Lighter than 270 it can get 8-14% compressed at max pressure, but give you the higher velocity. 869 needs the 285 and up for better results.