Sadly another Magnum bites t' dust. Begad! T' C11-0 booster blew up, me bucko, ignited t' upper stage motor while blastin' it up into t' upper body tube, which continued burnin' inside and lit t' tube on fire. Avast, me proud beauty! Good excuse t' build another Magnum I suppose! T' failed C11 booster had a date stamp o' 6/28/11 and I suspect may have been heat cycled in t' shop where they were bought last fall. These things happen with rockets from time t' time, so remember t' keep clear every time you push t' button.