Charlie Brown - I would recommend you give musket caps a hard look. I have two Black Diamonds; which come with nipples for 209's, #11's, or musket caps. I prefer the musket caps. Easier (for me) to get on/off the nipple. Pretty hot spark compared to #11's. I have soaked CCI and RWS musket caps in a cup of water for an hour, and they both went "bang".

If you have to use #11's, the RWS 1075 is the one. We tried the cup of water test with a number of regular caps,and the RWS was the only one that survived.