Yes you are missing something. With the hammer fully downlower the rammer and you will see it goes nicely into the chamber under it. Now when you start to cock the hammer the bolt moves downward and clears the cylinder then the hand contacts the ratchet and starts to turn the cylinder at this very point is what you were referring to as 1/4 cock but in reality is about 1/8 cock. Now you might manage to cut the notch precise enough to catch this point but with just the tiniest amount of wear the bolt will start rubbing the cylinder then start catching in the notches and it will be new hammer time. If you must have the cylinder locked just do as I stated earlier.I must be missing something, because when I hold the hammer back around 1/4 cock, the cylinder spins freely in the clockwise direction and when I rotate it in the counter clockwise direction, it can be adjusted so the cylinder is stopped by the hand AND is aligned under the ramrod. Give it a try! Since the location of the half cock is determined by the depth of the notch on the hammer, you can definitely change the location of the hammer at half cock. Can you get it to the point that I was wondering about, I don't know. Is it worth it? Probably not. As I said, I was probably just over-engineering it in my mind. Best!
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