Actually, Steve is finishing a few minor details on it this weekend. It is suppose to ship out to me on Tuesday the 21st. It will take a few days to arrive so maybe by next Saturday I will have it. I will not be shooting 500 or 550 grains of powder in it. With a 21 pound gun the recoil would be devastating. I will probably start with a light load of 175 grains and work my way up to ??? what ever I can handle. I will chronograph the loads so we will have some real 2 bore data. There isn't much out there right now to go off of.