The other day my sbe II hung up after the first shot. Shell was a 3 inch estate high velocity #2. The bolt traveled to the rear but the shell was hung up in the chamber. Took the gun home, cleaned it well, lightly lubed with FP-10. Next hunt and it did it again after the second shot. This time I was shooting 3 inch hevi steel #2's. First shell cycled fine but on the second, the bolt traveled to the rear but did not eject the shell. Any ideas? Maybe the shells? Just hope the problem doesn't continue. I have shot approximately 3.5 boxes of heavy loads through it without any problems prior to the above incidents.