Vandal Bee

Cleaned again after the shooting and there is no damage on the ejector/receiver. Looks like the parts are working together fine now . It feels smoother and smoother. But ye initially there was a lot of lube in the mag tube. Thx again for the help - much appreciated!

The test today went flawlessly. 100 rounds with 0 issues whatever. Looks like the cleaning, lubing and the manual cycling did the trick.

Interesting, Its very noticeable and easy to reproduce when the gun is laying on the side. But very hard to reproduce when its in shooting position.

Alright, Cleaned, lubed, manual cycle 500 times (my finger and hands hurt ? ). It looks like the action gets stuck when/if the carrier moves up to load. I can feel it when I pull the handle back and gently release it until the carrier moves up. Then I pull back and gently start to release it gets stuck. If I gently touch/push the handle, the bolts gets released. It almost feels like the bolt tail is getting slightly stuck in the recoil tube. But its not - Removed the trigger group and the bolt is moving like butter. So that slight stuck might be related to the trigger group. Here is the video:

It feels smooth and travels all the way back. I do have the oem tube. I have the extension coming tomorrow. I will report back once do what was suggested.

I’m 6 1, 170 lbs and I’m not experienced in shooting at all - I’m a beginner. So my stance is most probably not correct. I have an experienced ex military friend that could help me out. The oil/cleaner I ordered is BreakFree CLP-4 Cleaner Lubricant Preservative Squeeze Bottle https://www.amazon.com/dp/B0050GW7KU/ref=cm_sw_r_cp_api_i_ZEW897DWZE0ZM13D3DJ3 I will definitively follow your advice - thank you very much both @StrangerDanger and @Unobtaniumfor the help - much appreciate it!

What would be your recommendation as next steps? Shall I clean it up well, lube it well and give it another test? Or don’t bother and contact Benelli for the warranty? By the way almost all pictures I took are after cleaning it up a bit, so there is no lube. In addition that small edge on the bolt caused the chips on the ejector. I’m not saying it is causing the cycling issues, just the damage on the ejector and the bolt itself. I apologize for my lack of knowledge, but what is a “locking lug interface”?

I did found which part of the bold is causing this. I did a close up inspection and managed to zoom.

couple more of the bolt and alignment

It looks like the same thing. However in my case the bolt looks aligned ok and I dont feel any friction then cycling manually. But you are right - there is slight chip wear on both sides that are similar to the ones in the post you linked. I did not payed attention to those as I thought its just normal wear and tear. I'm very new to shotguns and M4 - its my 1st one. Looks like I will have to contact Benelli for the warranty.

It does cycle by hand just fine. It was a bit stiff in the beginning, but after couple of rounds it is smooth like butter. I have some practice shell caps that I tried multiple times and It never jammed cycling manually. I just took everything apart and I don't see anything concerning. There is a bit of carbon build up on the gas pistons, but that is normal. One thing I noticed is that the magazine tube is quite lubricated. I will have to clean it well before I assemble it back. I was shooting in an indoor rage and recoil was ok imo. I cant tell if shells were flying 5+ feet due to the indoor nature of the range and tide distance between the walls of the cell. Shells were hitting the side wall and bouncing. I did some research and one suggested that it could be related to the recoil spring. I'll give it another shot after I clean and lube it and report.

Just got my new M4 M1014 and tested it in the local range. To my surprise it keeps jamming on ever 3rd load. It looks like it cant feed the shell properly and the bolt advances before the shell is pushed up. It also did not push the bolt all the way back on the last round - happened couple of times. I used Sellier & Bellot 2 3/4 00 buck shot. I fired 100 rounds and it keeps jamming on ever 3rd or so load. Did anyone had similar experience? What would you recommend - contacting Benelli for the warranty or check it with gunsmith? Could it be the ammo that is causing the issue?