I recently bought a CW380, but i have had a CW9 for several years. Thanks to this forum i have been able to cure my CW380 of its failure to return to battery. I ended up moving the extractor about .010" forward. My CW9 has been 100% with all ammo from round one. The CW380 had many problems with certain ammo, the ones with thicker rims. It is now 100% for the last 600 rounds.