I have a problem with a 4.25" double stack convertible. Specifically, it cannot feed any 9mm ammo. This is one of the VZ models with ambi safety, rail, and full length guide rod.
I have tried three different (TCM) magazines. I have tried FMJ, TC, and JHP ammo. In every case the cartridge will not tip up at all. It stops with the bullet tip against the feed ramp and case back against the slide. Re-racking just sets the bullet deeper into the case.
I suppose I should contact RIA and let them sort it out, but shipping is a hassle. If there is an easier fix I'd just as soon learn and DIY.