use different ammo.. some guns just dont like certin kinds of ammo.
I would not do any mods to your gun just it wont shoot some cheap ammo. try WWB, or S&B, its good ammo at good prices. if you still are having problems after trying MANY different ammo brands then contact Springfield Armory and they will probly fix it for you.
My Tactical came from the factory with a polished feedramp. It has only seen 40 factory rounds now out of the first 1000 rounds fired, the rest have been my reloads. I have never had a Fail to anything. Polish the feedramp up a bit but be sure to only polish, not change angles.
I had to polish the feedramp on my second XD40 Tactical. The bottom lip of the chamber throat kept catching my rounds as they tried to enter the chamber. I softened the sharp edge a little and it magically began working correctly.
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