Just bought a Umarex ux sa-10 co2 pistol and having problems. This pistol will fire .177 pellets and 4.5 bb's so I tried Remington bb's but they just fall straight through the rotary mag. Fortunately I have some H&K ones they fit and fire perfectly. I thought all bb's were the same? But obviously they must vary in dia.
Anyone had this problem? Any thoughts on this pistol, new out I believe