Lieb Posted June 7, 2014 Share Posted June 7, 2014 Took my new Benelli M4 for a shoot at the range last week. Shot about 30 rounds of Fiocchi 00 2 3/4" Buckshot regular load through it. I was quite disappointed. After every two rounds it would fail to feed and about half as often it would fail to eject. When I got home I stripped it down and did a thorough cleaning and light oiling. Then I returned to the range the next day to try it again. I had the same problem. Does anyone have suggestions as to why this is happening and what I should do to correct the problem. In it's current condition I could not count on it in a self defense situation. Quote Link to comment Share on other sites More sharing options...
Scout_21 Posted June 7, 2014 Share Posted June 7, 2014 I never had much luck with Fiocchi (though others may have) I've used remington, federal, and Hornady with no problems. Is the failure to feed just a severe failure to eject or is the chamber left empty? In either case your recoil spring may be a bit too stiff and I've head that leaving you bolt cocked back for a night or two can help...or just use some 3" shells to get that spring softened up. The only feeding problem I had was when I used the wrong length of spring for an extended mag tube and the last round always got caught up. A complete idiot move on my part. I'm sure other longer term forum member can give more thorough and/or accurate advice. Cheers and best of luck! Quote Link to comment Share on other sites More sharing options...
Lieb Posted June 7, 2014 Author Share Posted June 7, 2014 After shooting two rounds it ejects just fine but does not feed in another shell. Then other times after shooting another round the case gets hung up in the ejection port. Quote Link to comment Share on other sites More sharing options...
truckcop Posted June 8, 2014 Share Posted June 8, 2014 First: Try different ammo. All kinds of different ammo. Then report back. If it's a gun issue, the problem would probably persist regardless of the ammo. If it works with other ammo, well . . . . FWIW, Fiocchi (Crusher) is my ammo of choice for skeet/sporting clays out of my M1/M2's. Works like a charm. Never tried their buckshot out of my M4. For that one I use Federal. LE13200. Quote Link to comment Share on other sites More sharing options...
tinman1975 Posted June 8, 2014 Share Posted June 8, 2014 Is it the low recoil or the high velocity buck? The low recoil is pretty soft shooting and may not be powerful enough for break in. I run the HV stuff all the time with no problems Quote Link to comment Share on other sites More sharing options...
Lieb Posted June 8, 2014 Author Share Posted June 8, 2014 It is high velocity 00 buckshot (1325 fps). Does the M4 require a break-in period before it works properly? Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted June 8, 2014 Share Posted June 8, 2014 It is high velocity 00 buckshot (1325 fps). Does the M4 require a break-in period before it works properly? Verify chamber wall smoothness visually. Verify dimensions of shells and function check with another brand. Quote Link to comment Share on other sites More sharing options...
Sharkey Posted June 8, 2014 Share Posted June 8, 2014 Get yourself 100 or so Federal Tru Ball slugs. The 1600 fps ones. Blast em all through, give it a cleaning and then go back to the Fiocci and give it another try. The first ammo I shot through mine was all heavy stuff and I've never had an issue. The action brand new is like night and day compared to what it is like once you've put several hundred rounds through it so whether anyone confirms there is an "official break in period" or not, I say there is. Get some full strength slugs and shoot em for a couple of trips and you'll be shooting skeet before you know it. Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted June 8, 2014 Share Posted June 8, 2014 Before you know it...skeet skeet! Quote Link to comment Share on other sites More sharing options...
WrenchBender Posted June 8, 2014 Share Posted June 8, 2014 Very close yo my experience when mine was new.........get some wear on those springs and the action Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted June 8, 2014 Share Posted June 8, 2014 None of my m4s required this. I ran 1145fps 2.75 dram skeet loads out of the box on most of them. OP: what modifications if any from 100% box stock does your m4 sport? Quote Link to comment Share on other sites More sharing options...
tinman1975 Posted June 8, 2014 Share Posted June 8, 2014 It is high velocity 00 buckshot (1325 fps). Does the M4 require a break-in period before it works properly? Seems that the consensus is : yes, it does require break in. I was one of the lucky few who got one that fired everything from low brass birdshot to slugs right out of the box. I did, however, strip it down and lube everything up really well prior to shooting.....I do that with any new gun. Quote Link to comment Share on other sites More sharing options...
Lieb Posted June 9, 2014 Author Share Posted June 9, 2014 My M4 is box stock. No mods. Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted June 9, 2014 Share Posted June 9, 2014 My M4 is box stock. No mods. Try some Remington 00 from walmart. Quote Link to comment Share on other sites More sharing options...
hypervdh Posted June 9, 2014 Share Posted June 9, 2014 (edited) I lubed the crap out of mine and it cycled low brass Winchester #8 shot right out of the box. I mean oil dripping out lubed. I think think you should try a couple types of ammo though before you blame it on the gun. Leave the action locked back for a couple days too. If none of that works then maybe you can have your spring tested. Edited June 9, 2014 by hypervdh Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted June 9, 2014 Share Posted June 9, 2014 Please try another load. Even field loads of birdshot. I feel like fiocchi is the issue if the weapon is well lubed and in spec. Quote Link to comment Share on other sites More sharing options...
Sharkey Posted June 9, 2014 Share Posted June 9, 2014 (edited) Seems that the consensus is : yes, it does require break in. I was one of the lucky few who got one that fired everything from low brass birdshot to slugs right out of the box. I did, however, strip it down and lube everything up really well prior to shooting.....I do that with any new gun. I can never understand why EVERYONE doesn't do this. I have never once taken anything to the range that I didn't know inside and out before I got there as well as cleaning, and I mean "detailing" every nook and cranny from the day it got home so I knew all of those little pain in the butt spots I was going to have to take extra care on later. Dis-assembling and cleaning any new weapon, no matter what it is, before a trip to the range should be a requirement with anyone who purchases fire-arms - new OR used. I would consider that just a common sense thing so I'm glad you mentioned it. Edited June 9, 2014 by Sharkey Quote Link to comment Share on other sites More sharing options...
RoadDad Posted June 10, 2014 Share Posted June 10, 2014 My M4 would fire rocks with a dirt charge right out of the box. Must have been one of the lucky ones. Quote Link to comment Share on other sites More sharing options...
stockplayer Posted June 10, 2014 Share Posted June 10, 2014 (edited) OK guys listen up 8 years training, IDPA, and three gun. This is how I lube my guns. Glocks..........................a few drops in the right places 1911s...........................dripping AR15s............................dripping Benelli M4 and M2...........dripping I use Militec......I know, I know "its a dry lube"....bla, bla, bla! All these years and I cannot remember a malfunction ever on any of my guns.....ever! Edited June 10, 2014 by stockplayer Quote Link to comment Share on other sites More sharing options...
Lieb Posted June 12, 2014 Author Share Posted June 12, 2014 Thanks for all of your feedback. I called Benelli about my problem and they asked me to ship my gun to them at their cost. They will put a rush on the repair/service and said I will have it on my doorstop within three weeks. That will make me happy. Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted June 12, 2014 Share Posted June 12, 2014 Thanks for all of your feedback. I called Benelli about my problem and they asked me to ship my gun to them at their cost. They will put a rush on the repair/service and said I will have it on my doorstop within three weeks. That will make me happy. Did you not try any of the other suggestions in the thread first? It would be a shame to lose your shotgun for 3 weeks because you got some out of spec ammo. I've had that happen with an M4, before. Wolf .223. Cases were out of spec. Wouldn't work in a Colt, Sabre, or anything else. Quote Link to comment Share on other sites More sharing options...
WrenchBender Posted June 12, 2014 Share Posted June 12, 2014 ...... Dis-assembling and cleaning any new weapon, no matter what it is, before a trip to the range should be a requirement with anyone who purchases fire-arms - new OR used. I would consider that just a common sense thing so I'm glad you mentioned it. i completely agree........just makes sense. OP i think you are not giving it the chance it deserves, however, your gun, your call. i just hope that you do not have the same results when it returns from Benelli. Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted June 12, 2014 Share Posted June 12, 2014 i completely agree........just makes sense. OP i think you are not giving it the chance it deserves, however, your gun, your call. i just hope that you do not have the same results when it returns from Benelli. Benelli doesn't screw around. They verify and then replace subassemblies. If the weapon has a legit issue, it will be fixed. Quote Link to comment Share on other sites More sharing options...
WrenchBender Posted June 12, 2014 Share Posted June 12, 2014 Benelli doesn't screw around. They verify and then replace subassemblies. If the weapon has a legit issue, it will be fixed. I understand that,.....and completely agree. What I was meaning was this, "it would really suck to get the Benelli back and find out the issue was the OP's ammo" that is what I was trying to state about having the same results after sending it to Benelli Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted June 12, 2014 Share Posted June 12, 2014 I understand that,.....and completely agree. What I was meaning was this, "it would really suck to get the Benelli back and find out the issue was the OP's ammo" that is what I was trying to state about having the same results after sending it to Benelli Oh, I agree, but when he gets it back and it still does it, if that is the case, then he will have no choice but to try other things and dump the budget ammo. I personally think it's the ammo, or a grotesque issue with the M4. There is no way full-power buckshot should have issues. My 2 dealings with benelli CS were this: I asked, and they sent me an FP retaining pin with O-ring since Brownells didn't sell them at the time. I wanted a spare and told them so. Done. #2, was I had an M4 with a SLIGHTLY canted front-sight. Barrel assembly was replaced within the same 3 weeks OP mentions. It was perfect, then. Quote Link to comment Share on other sites More sharing options...
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