46 yrs old,testosterone 266 (range 250-827), difficulty losing weight, moody, easily annoyed, no morning wood but good erections. would this be low-t?

Symptoms : Yes your testosterone level is low and you need help either from your primary doctor and/or an Endocrinologist. I also strongly suggest you make an appointment with a Psychologist to help you control the symptoms you report. Please let me know what develops. You will a different and better person.