I created an account specifically to give my own .02. I bought a SBE II Comfortech. I "broke" it in using the biggest baddest rounds I could find, I put about 50 rounds down the barrel of the big stuff. I then took it out again and did the same thing. Today I took it to shoot skee. 3 Fail to loads in in 3 boxes of ammo it did not cycle 2 3/4 8oz shot. I heard this happens on light loads. I didn't pay close to 1500 dollars for a gun that will only shoot heavy loads. I am going to clean the heck out of it oil it up and try the heavy load break in one more time. If that doesn't work I will have a lightly used SBE II for sale or trade for an extrema II.