The bonded shock wave bullet made by Hornady for T/C is likely the .452 250 Gr. .450 bushmaster bullet which does have a much thicker jacket than the standard 250 gr shock wave.
The only difference between the Hornady 250 gr. SST bullet and the T/C shock wave is the color of the tip. For 2010 the Hornady 250 gr. SST will have the flex-tip only, Hornady has stopped production of their SST ML bullet with the solid red tip.
The results I had last season with my 20 gauge reloaded slugs tells me the flex tip bullets do open faster than the solid tip shock-wave or SST bullets
Doc
