I owned one and it never had a problem with any ammo, It ate hydoshock and every other JHP I put in it. One thing though, I totally polished the ramp and around the area where the bullet sits. That makes a huge difference. I traded mine for an EMP, I had done some other work on it, burled wood grips front strap etc, the guy and I remained friends. His cousin put a different barrel with a supressor on it, and it still fired flawleslly 3 mags .He agrees it is one of the most accurate 45's he has. And he has quite a few high dollar ones.I think they changed the angle during production, "I read that someware". So it depends if you have a newer one or an older one. Most guys who have them also agree that they feed anything. Did you polish the feed ramp? just by hand, no tools. My EMP that I got in trade, supposedlly didn't feed JHP's either, 2 hrs with the polish and it feeds anything now, 4 boxes later not a hicup. He told me it was stovepiping every mag, halfway through, and last round. I haven't had it happen once.I also tried all 3 mags, they all feed perfect. Get some "mass" it's on Ebay for 10 dollars, a pink cream, I know a lot of guys use flitz, but trust me, get some cotton balls, and dab it on the slide, and watch tv, no preassure, just follow the exhisiting groove, it fits you finger perfectlly, you will see it turn black right away, when there are no machine marks left, stop, you can do it in stages also, do 5 minutes, shoot the gun, if it works stop, if it works sometimes do a little more. just don't change the angle, and do it with the barrell out of the gun. Utube shows how Wilson does this, they have 4 video's on the subject, but it's a little much for the amature gunsmith. They use a dremmel, and regular bits, so it ain't rockrt science, but they really cut into it, I don't recommend that at this point.
Another thing, I bought chip McCormick mags for my gun, those remington mags are not great, it sends the round up at a different angle, try that first, I got the stainless shooting star 8 rounders with bumper pads.