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Posted: 8/11/2006 1:14:03 PM EDT
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Howdy all I have a BAR-10. It's been jamming about one round out of every mag. I have a supply of R.G. Nato ball, and some Norinco Ball ammo, and it will fail to eject about once per mag. The jam is such that the empty case is in the top of the upper receiver, aligned with the charging handle, and the new round is trying to feed under it. It's the same every time it happens. I suspected that the extractor was weak, but when I place a shell in it or push against itwith a brass punch it seems very strong. I have shot some of my good handloads in the rifle, and it's been OK with them, but it's not a good test because I have only loaded 5 rounds at a time in the mag when I was shooting them for accuracy. Is this something anyone else has any knowledge of? I welcome comments and input. :) |
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yup, I did all that. None of those things are wrong. Today I loaded some ammo with WW748 powder and I will try it tomorrow. If it's no better I may go with a faster and a slower powder. I'll try 3031 and 4320, to go up and down from the 748 load. Maybe increasing or decreasing the port pressure will fix it. I also am thinking about making a gas adjustable block on the gas tube to toy with that idea. I have made them for 223s and 6.8s in the past and they work well. I am also thinking that maybe a heavier recoil spring or a bolt carrier weight may help. I will call Buchmaster tomorrow and ask one of their "tecks" but I don't know if they will be able to help. Maybe the Rock River boys could help. To tell the truth, I think maybe the ejection port is not long enough. it seems as if the emptys sometimes hit the rear of the port and bounce back in. If I cut it back the dust cover won't colse up the hole. I may even extend the dust cover to the rear. (I am pertty good at such things) Before I get into any such radical smithing, I thought I'd put it out here--- to see if anyone else has had similar problems, and been able to fix them in another way |
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Not going to be help here. I have a BAR-10 20"A4 and havent had any problems with brass case surplus .308 and handloads. I will not use Wolf steel case .308. My own personal choice, not starting a Wolf bashing party here. Give RRA a yell. I would IM their guy who post on here. |
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Howdy again to all. I spent the weekend with the BAR-10 and found a few things out. It's picky about it's ammo. I went ahead and loaded 160 rounds of my favorite handload. 165 gr bullets with WW748 powder and it went 160 for 160. Shot very well too. Average of an inch at 100 yds, but I did several groups that were between 5/8" and 3/4". (5 to 8 shot groups) I didn't think my problem was ammo because it did the same thing with 2 different brands of ball ammo, but I am now thinking it just didn't like the Norinco or the Radway Green. I had only 1 box of Lake City ball, and it went through all of them without a problem too. I did learn it won't feed 150 grain soft points unless they are seated out to the same O.C..L as ball. Seated to the canalure with Remington 150 grain "cor-loct" bullets, it will do a "bullet high jam" at least 2 times every magazine. The points of the bullets will impact the barrel outside the chamber at about the 10:00 and 2:00 positions. If I seat the bullets so they will barely clear the inside of the magazine they work just fine. Another thing that was helpful is to cut the feed lips of the mags back about 2/3 of the way on that portion of the magazines that hold the bullets (not the shells) down in the magazine. I did that to several magazines so the lips only go over about 1/3 as much of the bullets as they did before, and the feeding got MUCh better. Very simple to do, and well worth the time. I am going to try 180 grain bullets this week with H-4895, WW760 and IMR 4064 to see if the rifle will work reliably, and to check it's accuracy with them. I will keep you all posted as things unfold. :) good shooting to all |
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RG is somewhat on the weak side, the Chinese ball may be as well to cut recoil for their diminuitive people like the Japanese and Spanish did. If you want to load USGI/NATO ball spec ammo i suggest you get one Weideners web site (check the spelling, I'm most likely wrong) for 8 pound jugs of AA2230C which is a military canister powder that is manufactured specifically for 5.56 and 7.62 ball ammunition, it is basically the same as AA2460 and uses the same load data (Accurate Arms), it meters very well and is relatively clean and workes very well in my 5.56 and .308 (DPMS) mouse guns and also is a good powder to use for M1 Garand ball duplicate loads. Your magazines can be a major issue with this rifle as well, a LOT of people manufactured FAL mags and there is a great deal of variance, even in a top end FAL/L1A1 you can have a fair amount of mag related issues (even with brand new ones) and the mag was designed specifically for that weapon while it was NOT designed for the BAR 10 At any rate, run the RG and Norinco stuff in FAL's, M14's and bolt guns, run something a little hotter in the BAR 10 and you should be fine. Jeff 
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I have to agree with you JKH. A few points of interest. The Norinco was actually quite accurate for ball, but seems to be mild. It goes into 1.5" consistantly. It outshot the R.G. by about an inch. I also have used AC2230, but I am having much better luck with Mil. Surplus WC846 Using Sierra 165 gr.BT bullets I am getting sub MOA with this powder in Federal cases. All ammo has been "length specific" in this rifle. I find that getting the correct pressure curve and the correct C.O.L. is important to it's function. With the same load but with bullets seated to the factory canelur on Remington bullets, the rifle jams 3-4 times out of every mag. Seating the same bullets so they clear the inside of the mag by only 010" they work perfectly. You can feed them only once however, because they can't be crimped when seated that way. So for you BAR shooters, that might be something to watch for. :) |
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