Ruger Breech Block Pin...Is 1 Enough?

[Ronno6]

I converted a Ruger Black Hawk Elite II from gas spring to coil.
The coil spring has about 2" of preload.
Not being totally familiar with the actual preload of each system I am concerned about something.
The Ruger has only 1 pin and 1 bolt (stock fixing bolt mount) retaining the breech block in the air tube.
Most other springers I have worked on have 2 or even 3.

Will 1 be enough? (Not directed at Jacqueline Suzann.....)

[JPSAXNC]

If one pin was enough for the gas ram. If the firing cycle is the same so that piston bounce back is the same with the spring it should be fine.

[Blowpipe Sam]

I had that rifle for six months before the ram failed.  I shot it at least 1500 times.  More likely over 2000 times.  The pin was still good and tight then.  I expect it can take the stress from the coil spring.  According to my Chronograph data that gun was shooting 7.9gr CPHP at an average of 926 fps for approximately 15 fpe at the muzzle when it was new.  Accuracy with CPHP was meh but I seem to recall that barrel liked H&N FTT.  Sorry, I don't have any chronograph notes about the FTT.

[mikeyb]

If your coil spring version is shooting at factory ME or lower there should be no problems.

If you attempt to use a giant coil spring to double the ME (like one from a 34fpe Hatsan 135) I suspect there could be problems with the cross-pin, trigger latch, pivot bolt, cocking link, and piston seal.