I've owned the P3 for twenty years and the 2300S two years both are completely stock. I shot in my garage at 7 yards, off hand, iron sights at a 1" target. I've shot the P3 more times than the 2300s but I thought it would be interesting which one "I" shoot better. The results were very close but the one that came out the winner all the time was the P3 . The trigger on the P3 is way superior, I'm sure if the 2300S had the two stage trigger on it the results could have been different . The sights on the 2300S was easier for me to pick up the 1" target. In conclusion if your looking for a CO2 or pneumatic I wouldn't hesitate recommending either one of these fine air pistols.