A bunch of you very kind and educated folks have been trying to help me with an AR .308. At first it would not cycle and then it would have soft primer strikes. I'm thinking that these events may have happened.: You guys got me into the rifle buffer spring and weight from he carbine. You also got me into an adjustable gas block. The adjustment of the gas block was going fine until soft primer strikes. Then all sorts of help to see what the problems is. This morning I was recalling "Bolt Bounce". I wish I could remember the context. Please feel free to tell me where and why this article was written. Anyway, I was thinking that the bolt when in locked back position and I had placed a cartridge with primer only in batter and I let the bolt go. It went with tremendous force. I had been thinking from advice that there was a going into battery problem from headspace or - fill in the blank. This time I began to let the bolt to forward just until I thought it was in battery. "BANG!" I'm I on track? I think now that there is too much spring of bolt since this happens when you manually let the bolt go. Thanks guys! What now? And, what would I do without all of you!?!?