Find this wine Find this wine Shafer Relentless 2005 78% syrah and 22% petit sirah. Dark red full bodied berry flavors. Excellent finish. 9 out of 10. Pin It Tweet 7 years ago by G J. More posts Shafer 2010 Napa Vallet Relentless Hao's wine. Awesome! 3 years ago by Mananshah Shafer 2004 Relentless So yum yum yum. 3 years ago by Paul A Hilton Shafer Relentless Napa Valley 2008 Red wine. Peppery taste. 4 years ago by Bdaughtridge Shafer Napa Valley Relentless 2009 I liked it, Bri thought it was a little dry or possibly had too high of an alcohol content. Good, but not $70 good! 5 years ago by Dcmaymd Shafer Relentless Napa Valley 2009 2009 Wine of the Year per Sommelier at Del Friscos 5 years ago by Amber N.