Your problems is most-likely related to the magazine feed lips. But there are other possibilities. Like the chamber mouth out of round.
High Standards were designed before Hyper-vel. ammo. They puke on ya if you use it too often. No firing pin stop on these little jewels so don't dry fire a H.S. pistol, use an expended cartridge brass as a snap cap. The magazines being sold by High Standard of TX. (the last I knew) are POS, the feed lips are soft and will not hold a set or may break off. These magazines are identified by a green follower and an overall appearance of having been made by a blacksmith.
Don't be discouraged by failures in mechanical things. Even the best, and FWIW I think High Standards (the old ones) are the best, have "issues" now and again. Patience grasshopper. JM .02