That's what I had to do for a while. Just be prepared for split-second delay on firing that often happens - it can be disconcerting.Large rifle primers will do in the meantime.
Anyway...
Berger 26414: 6.5mm 140gr Hybrid Target, 100/Box
26414: 6.5mm Berger 140 Hybrid bullets - Made with J4 Precision Jackets, the Hybrids have exacting tolerance and near-perfect construction.
www.milehighshooting.com