A little late to the party, here, but let me chime in. The 1st thing I did with my Panzer M4 was read the Owner's manual where it clearly says to break in the gas system with 100 high brass shells. I used the very same Italian ammo you did. At the end of this butt-whipping :) my M4 would, and does, feed fire and extract everything I load in it, down to that crappy Walmart red-hulled skeet shot. I often will mix the rounds in the tube, buck, slug and skeet and the M4 eats it all. 100% reliable and fun to shoot.
Look up the video about the argo gas system. In the Benelli m4 owner's manual it explicitly reads over 8 times to NOT use lubricant on the gas systems/pistons or get them wet. They soak them in the factory for transportation/long-term storage purposes. There is a few videos about this. Worth a look into for functionality/feeding issues 🤷. Clean that up and dry it up, then try her out. 😁😁
Glad to see an Honest review !!! It's a range toy. Good Job on the Vid !!! Tip : don't waste your $$ on low brass, even the 1300fps type.......the plastic hull will more than likely stick in the chamber, causing a stovepipe.
It always amazes me... How people blame the gun... When it's their fault, it's not running correctly 🤦♂️ You need to change the stock spring, if you want to shoot weak azz bird shot through these...even the "genuine" m4 can't run BS, without the spring change. That said... Who buys a combat style shoty and shoot birds with it 🤷♂️
The quality control of most Turk guns is horrid.......yes, there are a few top tier Turks, but the majority that have flooded the American market are trash. The "branded" Turk made guns like Stoger & CZ, Winchester are a better bet. I get it on the "cool " factor with the cheap price, but put the upgrades in this & you'll have a bunch of $$$ tied up in what might turn out to be a " Turkturd " !!! a few more bucks gets you the new A-300 Patol Tactical or the New Mossy 340......those guns will shoot !!!
The lowest I would ever go when it comes to gas operated semi-auto shotguns is a mossberg 930. These Turkish made shotguns are horrible! The gun shops are full of them.