The problem with tracers is that some states don't allow them, like California, for good reason since they do cause fires. For that reason, the market for them is kind of depressed. Some of the ammo sites sell tracer rounds, as well as just the bullets. I personally would not want to shoot them, since the only .308 I own is an M1 Garand National Match rifle in that caliber and they're not the best thing for your bore.