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Discussion Starter · #1 · (Edited)
brand new out of the box at the range first magazine put through it, failed to fire. racked slide ejected the round and next round and slide did not want to fully engage. kept recycling the slide and finally got 125 rounds through it. ammo was winchester 115 FMJ. and ideas on what caused it to fail new out of the box? ammo issue? break in period?
 

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90 grain bullets are on the light side for a 9MM. Try some 124 grain (115 grain are also common/normal but the 124's will have enough recoil to help get your pistol broken in) ammo.

Some pistols just require a couple hundred rounds or more to loosen the action/recoil spring, etc. up.

Might also try locking the slide to the rear for a week or so. Just let it sit like that.
 
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