It's my understanding that forcing cones have not changed. When the new plastic shell's came out they used the same forcing cone as before even though more is needed for the plastic. If someone knows different please post and I'll admit being wrong. If the barrel on the Express is not too thin, extending the forcing cone will help some with recoil and improve the pattern a little.
"While you are resting, someone somewhere is training and when you meet him, you will lose."