Bit late to chip in but, You may find CCI are made from a thicker copper makig them a little tougher.
The gap that prevents nipple damage does not help.
The coil spring design seems a little less snappy than Remingtn or R & S.
That and an oversize nipple should be enough to need a few hits before ignition.
Batches vary too,getting good reliability is part of muzzle loading but is acheivable.