I recently purchased a Sig Sauer Classic 22 and have been running Remington 22 Golden Bullet 1400 High Velocity LR cartridges. It keeps jamming, almost like the cartridges are too big, as I have to push the slide forward to fire the next round. I know I should try a different type of ammo, but if this does not work, what should I try next? Any suggestions on what type of ammo to try or where to go from here would be greatly appreciated..