I think you will find that IMR 4350 in charge weights from 46 to 48 gr. will put a smile on your face with the 140 gr. Accubonds. Just feed your gun what it seems to like best in that range, and re-check it for repeatability. I get sub-MOA with 48.0 gr. @ 2800+ fps out of my gun, but then again that is MY gun. You need to approach heavy charges slowly and look for pressure signs. By the way, althogh my gun shot smaller groups with lighter charges, the 48.0 gr. load was what I compromised on for a deer load, as it is quite adequate for the job, IMO.