I dont know if this helps, a number of years ago when we werent matching the cones to the caps as well I used a method that was kind of a pain to do but worked well. I used the stock cones and bought some fish tank air line that was flexible { like rubber} and made small rubber bands to go around each cap. The rubber bands were very thin to not hinder the hammer hitting the cap. Takes longer to load and you have some homework to do before the match. This was quite a few years ago when CCI made better caps they were just to loose. Bullett