I am trying to understand some things. I have a 9mm and someone I was with said to shoot 115 gr because it had less recoil than a 147 gr. They also mentioned that a +P load had more recoil than a standard load. Now I didn't try any +P loads but my groups were better with the 147 gr than the 124 or 115. Was he wrong? I'm mostly concerned with the ability to return follow up shots. I am looking at Federal HST and EFMJ for SD. Bullet weights range from 105 to 147. Where should I start?