308ld: You have been a wealth of information!
Thank you very much for it.
Your explanation of the "firing pin groove" also explains HOW the cylinder CAN be long enough for the 22 WMR!
There is no recessed groove for the 22 Magnum to fit down into so the whole cylinder can be used for the extra length of the 22 Mag.
Thank you for the picture also.
I will call the Ruger folks on Monday with my serial number for the particulars you cited.
Thanks again
Hold into the wind
VarmintGuy
