I do one strike, get a ton of trash. Dismantle all that trash. I get a ton of scrapper bounties from all that trash. I only do 1 scourge and 1 last wish nowadays on my lock (master race). Dismantle all that trash.. get more scrapper bounties.. complete all bounties while not even trying ... Go pick up my hawthorne reward.. another 7 easy cores.. that's already like 50 cores right there in a matter of 4 hours max