Yesterday I bought another Cobra. Dated at '69. It's blue, about 95%, and looks as if it was fired very little. At $275 out the door, I couldn't pass it up. The issue is: In cocking the gun slowly it locks up tight over 4 holes just before the piece is cocked. However over 2 holes it is just a tad shy of lock up as the gun achieves cocked position. But upon pulling the trigger (as the gun achieves full lock up) the two chambers in question move into lock up before the hammer falls. Is this acceptable? Any answers would be greatly appreciated.