I have the 935 and can't speak from experience for the Stoeger. The 935 is a gas gun and is better at soaking up the recoil from those 3.5" shells than recoil based actions. I find that mine patterns very well with everything from 2.75-3.5" shells both steel and lead. Perhaps the overbored barrel helps. My 935 will cycle all loads, even the light ones. So far it has been very reliable.
Brian