1937 Mauser Luger (S/42)

[Galaxy88]

Not sure about the caliber change. I ordered new springs to try. The extractor looks good. If the chamber was too deep wouldn't all rounds be affected? The last time at the range, I got five to six rounds to function properly(3 or 4 different times) then a complete failure. Click and no extraction. Winchester White Box. Thanks for your help!