I have read I think here and elsewhere that the AT bonus delay may be caused by short grains in a longer casing, say the E-16 in the 29-40/120. My thought is why not put the grain in with the spacer towards the nozzle instead of towards the delay? Would the burn still be the same? Wouldn't this make the delay ignite at the same time as the grain? If I get around to doing some field tests I'll post the results, but I'd like to here some theroys or solid facts before I start burning up reloads.