I just terminated some 10 gauge wires with spade connectors and had room to spare in the barrel. I used MIT iconn Economy Spade connectors and crimped the connections but one could also solder. They are also angled but not 45 degrees and I was able to adjust the angle to what I needed. Hope this helps.
http://ww2.mitcables.com/available-in-stores/speaker-interfaces/less-than-$250/iconn-economy-spade.html
http://ww2.mitcables.com/available-in-stores/speaker-interfaces/less-than-$250/iconn-economy-spade.html