My 350 Legend chamber fix
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- Опубликовано: 21 окт 2024
- I just Wanted to do a short video on what worked for me to fix any chambering issues I would’ve had with my 350 legend. At one point in the video I reference the lugs being in the chamber, I should have said the barrel extension.
Great advice! I removed my barrel and polished my feed ramps and chamber as you advised. I also relieved the front of my mag maybe 1/16” because I noticed long scratches on my brass from feeding across the mag. My 350 Legend BCA upper AR now feeds and functions flawlessly!! Before doing this it was absolute junk. Thanks for taking the time to make this video.
Glad to hear it worked for you! It’s a pretty simple fix. Out of the box, these BCA’s are what they are, but a little work and they can be great shooters. Good luck!
DItto! My local gunsmith did it for me pretty cheap and it feeds flawlessly now. Mine was even bending the case a bit with the longer rounds. No problem with my home rolled Lehigh extreme defenders, which is what I plan to hunt with. Thx for the vid!
Ditto! Works great now. Thank you!
Your method works. I’ve done this on my 10.5 inch barrel on my AR and only had 3 failures to feed.
Before it wouldn’t go into battery on the first shot.
Now after cleaning and polishing it a second time using your method it runs as it should no matter the grain bullet.
Thank you!
Thanks man. 15 minutes and fixed. Appreciate the video.
Great video. I had feeding issues with a bca barrel so I bought a faxon barrel. Feeding issues solved
It's what I should of done when I tried with the AR Stoner barrel. Some builds you can get lucky with the "budget builds ", but in cases like this, might have to coin up for better products
I’ve had similar issues with a lot of my brass getting gouged or shaved. My chamber had very sharp edges at the end, so I polished those a bit and took off the sharp edges, which helped dramatically. I’ll have to try the bore mop polishing for the chamber!
Great advice, Jeff! Thanks for taking the time to make this video! I sent it to some friends who are getting ready build 350's.
This is exactly what I needed! Will do this work on my next day off and hopefully solve my problems too!
I've tried twice building a 350 with no luck. I tried an AR Stoner barrel both times with the same feeding issue. I tried minor cleaning the feed ramps, modding the mag, no luck. I want to try again with an Anderson complete 350 upper, but once again concerned about the feeding issue. After watching this, I think I'm gonna give it one last try with Anderson, and if I run into any issues, I'll do what you did. Thanks for posting 👍
Same trouble with my AR Stoner barrel. Frustrating
Stoner is BCA product
I've done this to my AR barrels and it does work well .
I polished the feed ramps on the barrel and on the receiver. I know they don't recommend doing the receiver because it uses protection by anodized but it helped a whole lot more and it solved the problem. I do like the chamber polish because once in a while it will catch in there so I will try that. Thanks
Hmmm.Mine is damaging the case as it basically stove pipes.Did the feed ramps and tried multiple mags.I just pulled it apart and ordered a new Bca barrel.Should have sent it back under warranty,but it's usually a simple fix like you did. Now I'm at the point that I'm not risking a bad failure. If the new barrel wont work on the bca Complete upper receiver, I'll take another one I'm not using and try that upper. Ive had a 6.5 Grendel that shot 1 hole groups but wouldn't cycle. Out of spec upper.Its still running flawlessly after the change and the upper went to the landfill.
I pretty much took out the whole center lug in the feed ramp on one of my 350s because I like shooting flatter 9mm bullets like hst and gold dot in my hand loads
HAVE ALSO NOTICED SCRATCHS ON BRASS/BULLETS WHILE HAND CHAMBERING-I PLAN ON POLISHING CHAMBER AREA/RAMPS AND WILL THEN TRY IT BEFORE I MODIFY MY MAGS-THANK YOU FOR THIS MUCH NEEDED ADVICE-I PURCHASED A ANDERSON BUILD ON "GB" AND WHILE CLEANING BORE I NOTICED SEVERAL SMALL METAL SHAVINGS-HOPE TO TWEAK THIS BUILD BEFORE "RANGING" IT FOR OBVIOUS SAFETY CONCERNS-I WILL LET YOU KNOW THE OUTCOME !
Thanks for the advice!
I built my 350 with a faxon barrel, just installed it no tinkering or anything and I've not had any feeding issues at all. The only reliability issues I've ever had with the rifle are specifically with the Winchester 145 grain fmj stuff short strokes it just a hair. I think a lighter buffer would fix that but it runs my hunting loads just fine so I'm not going to mess with it.
Baron, I'm considering a 350 build and Faxon is my preferred barrel mfgr (their 20" is calling me). I've seen some complaints that the M4 feed ramps don't match the barrel extension. Have you noticed anything of that nature? If so, you have mentioned no issues at all, so there must not be the issues others have complained about. Thoughts?
Spot on consistent with my experience
Great info thanks, looking at a build in the near future ;) happy hunting !
You gotta trust the opinion of a gun channel that has over 300lbs of lead cakes on the work bench
😂
thank you sir ill have to try this
I have a ruger ar style. The only round i have issues with is Winchester 150 gr. Extreme point. I believe it is because this rd. Is slightly longer and the tip is very pointy. Had no other issues unless dirty. The guy at gunstore said the 150 extreme point is for bolt action
Mine like the 180g , mine doesn’t like any thing with a pointed tip
It’s similar to what mine is doing except mine is throwing the round up and hanging up 180 degrees opposite of what yours is doing. Think it just need the same?
faxon makes a great barrel there feed ramps are custom to work great for 350 legend
Faxon does make great barrels. I have one on my 6.5 grendel. They use a big bore (or single) feed ramp which is really just one feed ramp. Used by A lot of manufacturers on the 450BM and 50 Beowulf. BCA uses this on their 450BM barrels and a 300BO feed ramp on the 350 legend. The 300BO feed ramp is wider than the standard feed ramp you will find on most 5.56 barrels.
@@jasunderlan Good info! Thanks for that!!!
Great advice!
Wondering mine does not chamber all the way ,I help give a little push it fine.seems to me like the spring not pushing hard enough?a polish might do the job? mostly happens on the 12th round it gets heated up.i thought never happens cold.this may work thanks
Check the magazine for hang-up. I noticed my magazine opening lips were catching on the case of the brass which I fixed with a dremal
When you polished your feed ramp did you attach the Dremel polisher to a dowel rod ?
Also did you wrap steel wool around it as well.
I did look at the link for the Dremel kit and also says wool.
So the look of the steel wool on your video is by adding steel wool
around the polisher yourself or the result of it having steel wool
In the Dremel tip ?
Thanks, Great Video. !!
No steel wool. Used mother’s to polish the feed ramps too.
The BCA leaves 1/8" of flat around the breech face. I ramped the breech face and it feeds everything.
Same issue with my x39 I changed the angle a little and made the feed ramp longer so the round was hitting the ramp as soon as it came out the mage my ramp was a little to high the nose of the round would catch it so dropped it down some with a better angle and polished it and no more issues
I’ve watched lots of videos with people having feeding issues with 350 legend as did I with my first barrel whose name I shall not not mention. Most people mess with the magazines but I have professed from the beginning it is a barrel extension problem and not a magazine issue. I currently have 2 ar350 legends one with a mos-tek barrel and one with a faxon barrel. Both barrels have larger and more shallow feed ramps. Never had an issue with either one.
It’s ok to call out BCA…. Their barrels are budget and with some work can be good shooters and made to function properly. I have not messed with any mags. In fact if you look close, my upper does not have a forward assist. After doing this process, I’ve had very few feeding issues. I took my daughter to the range a few weeks ago and we put close to 50 rounds though it without any FTF. I knew going into it, that I’d need to do some work and I was ok with that. I also lap my uppers…. Everyone of them. PSA, Anderson, AERO….. just for piece of mind.
What do you mean by “lap my uppers” ?
To me its a "stacking tolerances" issue: feed ramp+magazines+ammo. It is for most ppl a feed ramp issue, I have seem some feed ramps (wont name the maker), made me think wtf were they thinking. Not only BCA. I have a Faxon barrel, it fed most ammo. I still had trouble with some Hornady, would jam about 1/4 of the time. Cutting about 1/4 inch off the feed lips fixed the problem. I will get around to polishing the ramps.
SInce this is a straight walled cartridge that headspaces off the case mouth I am leery of polishing the chamber. If you take too much, or in the wrong area, you can get all the problems of improper headspace - high pressure, case head separation, etc. idk that I would recommend ppl polish the chamber. too many ppl have the "moar is better" attitude and will end up with headspace issues.
@@brawdys I think cutting 1/4” off the feed ramps seems balls’y but if it worked for you then good on you. To me using AL polish is very mild and doing just enough to get it smooth has very little risk of messing with the dimensions of the chamber.
@@jasunderlan feed *lips* of the magazine, not feed ramps lol.
not only does it smash the point but it kinks against the brass as well agaisnt the ridge of the chamber. at least on both of mine it does/did. i polished mine as well and sounds like i was getting similar results as you but i went ahead and modifying and now there are absolutly no issues at all. just have to flar out and make a little step up in the forward third of the magazine to allow the shell to jump out to the proper angle sooner and then the bolt goes into battery nice and smooth every single time on every single round. if you can hand rack through an entire 10 round mag and not feel one single shell hang up then great. your set to go but if you have one or 2 shells hanging up a little, usually the first shell and the last 2 shells, then a simply mag modification will take the rifle from 95% good to go to 99%. the mags also work noticably better and smoother in my girlfriends ruger american as well.
I tried this before I polished the feed ramps and chamber. It absolutely did not help. It resulted in the worst jam I have ever had in an AR on the first shot. I also ruined a perfectly good mag which is not cheap.
Good info, subbed
Nice video. I love the close up and visual description. Did you polish the feed ramps without taking the barrel off? Did you use a dremel tool or use the dewalt drill on the feed ramps also?
Thanks! I had the barrel off but you don’t need to. I used a dremel and the kit listed below. I used mother’s AL polish on it too. A couple of the heads in that kit fit the ramps perfectly. Good luck!
HYCC 100pcs Multifunctional Wool Felt Mandrel Mounted Grinding Polishing Accessories Attachment Set - Fit Dremel-1/8 Inch Shank www.amazon.com/dp/B01LZAK10O/ref=cm_sw_r_cp_api_glt_fabc_TZ7SNGTPEDXGGJBE3STP?_encoding=UTF8&psc=1
That’s awesome
Awesome vid very helpful 👍
What is the long rod that inserts into the drill chuck called?
It’s just 2 sections of a cleaning rod.
How did you polish the feed ramps? Good video!
Dremel with the heads from the link below. Just used Mother's AL polish. There is one of the polishing heads that fits the angle of the feed ramp really good. :
HYCC 100pcs Multifunctional Wool Felt Mandrel Mounted Grinding Polishing Accessories Attachment Set - Fit Dremel-1/8 Inch Shank www.amazon.com/dp/B01LZAK10O/ref=cm_sw_r_cp_apip_tmKL1P5sU1vrY
@@jasunderlan thanks!
@@jasunderlan did you take the barrel off to polish the feed ramps or leave it connected to the upper reciever?
@@zacklacy6701 I took it off, but you can do it by just removing the upper.
I'm finding the .45 bore mop to be too tight. Think I'll try a .35 cal instead.
i just looked at mine, and it says 45/40 bore mop. not specific to a 45. Hope this helps
www.amazon.com/Hoppes-Cleaning-Swab-40-45-Caliber/dp/B000PW58QY/ref=sr_1_18?crid=GJGG2QULMGUZ&dchild=1&keywords=40%2F45+bore+mop&qid=1635871053&qsid=134-2192668-9433365&sprefix=40%2F45+bore+mop%2Caps%2C119&sr=8-18&sres=B09176VN14%2CB08SWLFXXT%2CB01IQPGFO0%2CB078HDTZL1%2CB07P7NFV1F%2CB078HFNXHW%2CB07RBCBM7K%2CB000AU4D62%2CB00CMWEVIQ%2CB00LP9MOJ0%2CB0819VXDKY%2CB0048KI3SY%2CB075RB35LN%2CB000O7F7YI%2CB0812BK7NB%2CB00CFYAHFW%2CB000PW58QY%2CB078HF3NNJ%2CB00LFD9FH0%2CB079BZ6Q1C
@@jasunderlan Thanks. .45 cal is the correct size. I originally tried to insert mop without the polish on it and seemed too big and tried .35/380 instead. With polish on mop, .45cal worked best.
How do you polish feed rams
The pointy one with the grit it came with and a Dremel. Then finish up with mothers. DO NOT USE heavy grit on your chamber though.
a.co/d/1OdMmDB
Want to add. Point felt one.
You have to be careful about polishing to the front of the chamber where the end of the round seats when chambered.
correct. that is why Mother's AL polish is great. its not lapping compound or anything. Just enough to take the rough finish off.