When members of pearljam and the dead__kennedys like your band enough to put their name and money behind it, you’d be justified in feeling like you’ve made it. Even when, in the case of incendiary Colorado punk group dead.pioneers, you’ve only been around for four years. “To open for Pearl Jam in the size of the venues that we’re looking at — being as young as we are and having skipped as many steps as we have as a band — we have to believe that we deserve, or are at least audacious enough, to be on that stage,” says Gregg Deal, frontman of Dead Pioneers. On April 11, it’s releasing its second full-length, the Hassle Records-released Po$t-American; it will play an album release show on Sunday, April 20, at the Bluebird Theater. After that, Deal and crew will be leaving for the East Coast to open four stadium shows in Georgia and Florida with headliner Pearl Jam, whose bassist, Jeff Ament, hand-picked Dead Pioneers for the tour. Then in May, the group will head to Europe, part of an a...