Did another put together from parts laying around.



13-77-C tube with a stiffly factory sprung phase II hammer. It wears the current 13-22 10.1" .22 bbl.



I had been having a bit of trouble last fall with this extended probe bolt blowing open at high pressure. Turns out the sbk handle I was using on it was bent. Could have been mis-adventure- gun had been loaned out to various nephews and grandsons... or, pressure(?) had bent the handle back ??!!
At any rate, bent it was. Thats a heavier replacement made from discarded steam control parts. Yeah, I know: Cheapskate



There's the probe fully retracted in the sbk breech.

At 25 pumps, this new handle lifts about 1/16" firing a 18.1 gr JSB Exact Heavy. Much better than having the bolt blow wide open and fully retract. Don't really need blow-back on a single-shot a/g.





There's the JSB Heavy at ten pumps, 12 Meters, 6X on the ever reliable 4-12X A/O Banner.