Okay new guy. You have just learned a valuable lesson about the shooting sports: You get what you pay for...at least most of the time anyway. As for the compact RIA, I’m afraid what you are running in to is in part a tolerance problem. Even with the Colt Officers Model the 3.5” slide just doesn’t have enough weight behind it to provide the inertial force necessary to make the pistol 100% reliable. This is why manufacturers attempt to compensate for this problem by using extremely heavy slide springs...usually a double spring arrangement around 20 + pounds or so and even this does not fix the problems 100% of the time.
Magazines are a critical issue with compact 1911 format pistols. The best bet here is the magazines made by Wilson Combat. The pistols must also be kept extremely clean as they will be much more prone to reliability issues once powder fouling starts to build up. All in all, once tolerances are pushed to the limit the way they are with short format 1911 pistols everything has to be just right for the pistol to run reliably and those conditions are not always practical or possible.
Even Kimber has run into issues with their 3” 1911 format pistols. The instruction manual that came with the one I had said “Ball ammo only” and “don’t call us until you’ve run 500 rounds through your pistol”. After 500 rounds about all I could get to run was the first 12 to 15 rounds on a clean pistol with ball ammo, and Wilson Combat magazines, before failure to feed issues started occurring. The Springfield EMP gets quite a bit of press for being a short 1911 format pistol that they “got right”. Mine is a 9MM and while it’s more reliable than any of the other short format 1911s I’ve owned, I still encounter failure to feed issues after 25 to 30 rounds have been run through the pistol.
I’m afraid that if a 1911 format pistol could be made to run reliably with a barrel shorter than 4” John M. Browning would have invented it. Now let’s define “reliability”. Reliability to me means that the great majority of a class of pistols, from a single source, runs the majority of the time with a wide range of ammo. This post is going to light some folks up whom will be quick to point out that their short 1911 pistols made by “so-and-so” is the greatest thing since sliced bread and that it “will fire under water after a cup of concrete has been allowed to set up in it”. Some of these short pistols run all of the time, some run some of the time and some will never run. If you get a good one, count your blessings. If you get one of the others, your chances of getting the manufacturer to correct the problem is not much better than 50/50.
Now let’s talk about RIA. They are low end guns with a minimum of hand fitting necessary to get them to run. I’ve owned four of them. Only one out of the four was reliable when I got it. The other three required extensive work (barrel link, feed ramp, barrel bushing and slide latch) to get them to run reliably and then it was only with ball ammo. As a famous economist once said: “There are no free lunches”. Probably the best value for the money in a 1911 these days is the SR1911 made by Ruger. I own five of them, two 5” and three 4” Commander style, and all have been 100% reliable with what ever I shot in them. That said, Ruger has just come out with a short 1911 format pistol in 9MM. I will stay away from that one. My search for a short, reliable, 1911 has been extensive...Kimber, Smith & Wesson, Springfield, Colt and RIA. I will not bet my life on any of them. Want a short pistol in 45ACP? Try the Smith & Wesson Shield or the Glock 36. They go bang every time you pull the trigger with any ammo you care to use.