I was once invited to an IPSC shoot by some friends that know my affliction for guns and my dislike for 1911-style guns. I showed up with the stuff I know how to handle. That is, a SIG P226 with a sport trigger, a Winchester 1300 with ghost rings and my SIG 510 (back then, I didn't have any .223 gun).
In the standard class, with my 226, I scored third out of ten, with the shotgun 6 out of 23, and with the lowly, unwieldy SIG 510, I became second. Especially that last result surprised the heck out of me - everybody had Aimpoints, Trijicons ACOGs and whatever red-dot sights existed about 5 years back. Given, this was not against the super IPSC elite, but latter the local bunch, yet I thought quite a few of these guys were much better shots than I.
Although, not really well-trained for running on the rifle stage, though - going jogging every other day sure helps physical condition!
As it turned out, the Swiss Army taught me how to shoot. It later retrained me to use the SIG550, which is even better for IPSC rifle stages.
BTW: The guy that outclassed me in the rifle stage did it with a genuine M16 (yep, full-auto). He didn't have the fancy stuff neither. Had a beer with him later, found out he went to Vietnam for three tours. And supposedly, he spent his military life in places closer to the enemy than most of us on TFL ever have.