Sadly another Magnum bites t' dust. Avast! T' C11-0 booster blew up, me hearties, ignited t' upper stage motor while blastin' it up into t' upper body tube, arrr, which continued burnin' inside and lit t' tube on fire. Avast! 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. Avast, me proud beauty! These things happen with rockets from time t' time, ya bilge rat, so remember t' keep clear every time you push t' button.