I have had problems with the funny shaped bullets in the past, some of the HV solids had a truncated cone shaped nose and a step in the bullet at the base of this cone. They would hang up on a Ruger I once had so I have not tried them anymore. I have run all kinds of CCI thru Rugers without much trouble, including Stingers. I don't know about STingers in a custom barrel on the Ruger but the factory barrels seem chambered loose enough to eat them up. I always lubed my Rugers sparingly, despite what folks say about not lubing them. Of course some times once in a while you have to take the gun apart to clean it, good idea whether you lube or not, if you shoot it alot. Ruger mags are usually 100% but if you have trouble, it does not hurt to get some factory spares, they are not that steep and good to have anyway.
Your gun is like your nose, it is just wrong for someone else to pick it for you!