I have a Astra Constable 22lr (1980's) that jams every other round when using regular 22lr. It's some what better when using hi velocity ammo (1500-1650 fps) from Remington and CCI, but still maybe two out of ten rounds still jam. Cannot figureout what the problem is. What happens is the spent shell is not thrown clear of the breach and jams just as another round is being fed into the chamber. Dont know if it's a ejector problem or a magizine problem. Another thought was that maybe it needs a lighter barrel spring. This has happaned since I owned the gun 25+ years, but not used much. Anybody else have this problem. Thanks.