I have a SBE with approx. 2500 rounds through it. I'm having trouble with bolt jambing. It ejects the empty shell, but won't spring forward to load new shell. When this first started a few months ago, it was only after 125-150 rounds that day at the range. My assumption was this was caused due to fouling from inexpensive low power shells. Howver, the problem is getting worse. Most recently it started jambing after only 65 rounds. This gun is stripped and cleaned after each day afield. Only the bolt assembly has never been disassembled. Could it be that a spring is already weak?
