That should be worst case straight out.According to the -10,
on outriggers---4500 lbs.
no outriggers---1700 lbs.
What the -10 DOES NOT say is if this is straight out or max. boom up (45 deg.), what I am fixen to do once things warm up, is to do a work radius chart, wish I had a hanging scale, that way I could do a load radius chart, lay out the load till a bit of lightness then deduct 20% off the weight, that would give a SLL.