Minor scoring and reloads are the only things hindering PCC vs Open on the current HHF's. A lot of PCC shooters don't practice reloads, but the ones that do are finding it doesn't take much to get fast. My biggest hindrance in the beginning was being left handed and shooting a Glock mag lower. I switched to an MPX after nationals and reloads are no longer a problem.
At least once a week I spend 30 minutes of my dry-fire on an unloaded el-prez. It helps me work on unloaded starts from the belt, transitions and reloads. I've been hitting 5.00 par times pretty consistently the last couple of times.