The P245 is nothing more than a chopped and bobbed P220. It isn't any thinner, just shorter in length and height. The only SIG's that I have liked the trigger pull out of the box on are the P210 and P229 Sport. You won't get a pull like a P210, but the P229 Sport pull should be achievable. If your SIG is not within the advertised specs, you can send it back to SIG for adjustment.