Sounds like there is an issue with binding someplace. You should't have to push the slide forward for it to close
Did you clean all the gun oil out of it before you started firing it? Take off the grips and clean out as much oil as possible with Q tips.
Take the slide off and check the slide for any burrs or snags it might have.
Vern
http://vernsdidj.com Didgeridoo info and pictures
NRA member
Taurus 24/7 PRO .45 ACP, Bersa Thunder .380
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