I have an EAA Witness (Tangfolio in Italy) 9mm with a 22lr conversion kit. My senior citizen wife warms up on the 22lr and then switches to the 9mm. On our most recent outing just yesterday she placed 2 groups of 10 rounds each in an eight inch group rapid fire at 7 yards with the 9mm. I really believe the training with the 22 paid off. I pity the BG who enters our house. He will be thoroughly ventilated.