Cock on opening mod safe?

[eldowerks]

chuckindenver,

I recently purchased a Speed Lock kit from Numrich and installed it in a spare bolt I have for my Eddystone just to see how well the cock-on-opening function works. The Speed Lock kit consists of a modified cocking piece, a shortened bolt sleeve, what looks like a standard firing pin, and an extra power(?) spring.

The directions say, "If after installing the bolt and pulling the trigger you are unable to open the bolt, you will need a modified sear, which we will supply free of charge..."!!

My Eddystone with a stock trigger and sear works fine with the Speed Lock unit and it does not jam the bolt.

However, because the sear notch on the modified cocking piece is so short (turning the two-stage trigger pull into a short, light single stage pull), the trigger drops the firing pin while still on the first stage trigger cam, and before the safety stud on the sear is engaged in the bolt interlock slot. I can pull the trigger and release the firing pin with the bolt handle up nearly 90 degrees perpendicular to the stock and with the bolt handle barely engaging the safety shoulder on the action.

I haven't shot my Eddystone with the cock on open modification because I'm afraid I might inadvertently fire the rifle with the bolt out of battery.

I see also that aftermarket triggers such as the Timney E1 as well as the Dayton-Traister Mark II replace the sear and eliminate the safety stud entirely.

The safety stud on the sear was designed to prevent the sear from releasing the firing pin unless the safety stud is engaged in the bolt interlock slot which is supposed to happen only when the bolt is fully locked.

It seems that any trigger system or Speed Lock cocking piece which eliminates the safety stud or renders the safety stud ineffective might very well allow a M1917 to be fired with the bolt out of battery.

What am I missing here?

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