So I shot my '28 and my m1 a ton the other weekend to total of 500 rds in one range session alternating guns. I gotta say the '28 was wayyyyy smoother to the point where I am mildly disappointed in owning my m1, kinda wanna sell it to buy a different MG. My '28 has a repro 1921a (no compensator) barrel so the barrels are the same with the exception of the fins, so i feel it's a pretty fair comparison. The m1 just felt choppier and I could feel it "bottoming out" against the back of the receiver, saving grace for the m1 the sights are way better but to me that's it for now. Anyone else who owns/shot both extensively feel the same away about the recoil impulse? Not talking about historical significance, rate of fire, blah blah blah