Looks like the groups I have gotten with Accubonds. Seem to be a very in-consistent bullet. When they first where released they where the rage and I test a bunch of sizes in Customers rifles. None shot well.
Can't help you much with data as I have always viewed the 7mag as a "160gr" cartridge and you seem to be leaning towards 140's
My go-to test load is;
168gr Berger vld hunting
70.5 grs H1000
CCI-250

Being a non-liker (hater) of Leupold scopes I would ask if you have proven the scope to be accurate ???