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I had a 92F that took ~300 rounds before it stopped failing to feed, and I had a similar issue with my Para P-12, so brand name produced weapons do have troubles at times. In the case of the 92F, after the weapon had a chance to wear the rough edges off, it operated flawlessly. The FTF on the Para were caused by the magazine spring (a not unheard of issue with Para's)

But I am a little surprised you have that issue with the Springfield EMP. UMC is not generally considered bad practice ammunition, so it’s probably not that.

My suggestion is to give the folks at Springfield a call. While they do manufacture top notch weapons, their processes are not flawless and mistakes get through. I received an M1A from them once that had several flaws, which they corrected after I contacted them.

But I would get it corrected. If it’s having trouble with what I assume to be ball ammo, it may have more trouble with JHP defensive rounds.

You mentioned the feedramp as a possible cause but don’t forget to go over the magazine (it can cause FTF too).