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I know,I know....BCA
#7939623
08/17/20 07:51 PM
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Joined: Sep 2004
Posts: 2,138
jrfan
OP
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OP
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So, I acquired a Bear Creek Arsenal.450 Bushmaster upper. I knew better but I did it anyway. There, I got that out of the way, so please don’t rub it in.
If you’ve even only heard of BCA, you know they’re cheap, which is why I couldn’t resisit and I’m going to pay for it in the end. I bought it knowing that accuracy wasn’t going to be great or even good, but that’s not a problem. It’s surprisingly more accurate than I expected. However, I can’t hardly get it to cycle a 5 round magazine and I can’t get it to lock back on a empty mag at all. At first, I thought it was undergassed, but now I’m not so sure. It is throwing brass at about 2 o’clock. But I think it’s hitting the back of the ejection port (side charging) and throwing it forward. My brother in law took a slow mo video and it appears to be slamming the bolt open pretty hard, which makes me think it’s over gassed at this point. I have used both an H2 and H3 buffer with no change. I just ordered a heavier spring from Sprinco, but now I’m just throwing parts at it.
Other than telling me not to buy junk, does anyone have any thoughts?
Last edited by jrfan; 08/17/20 07:52 PM.
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Re: I know,I know....BCA
[Re: jrfan]
#7939630
08/17/20 07:55 PM
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Joined: Jan 2011
Posts: 65,413
SnakeWrangler
THF Celebrity
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Joined: Jan 2011
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.....does anyone have any thoughts?
Trot line weight.... Just trying to be constructive.... Seriously, don’t have a clue as to help ya out but couldn’t resist......good luck with it!
I believe in science and I’m an insufferable [censored] Actually, BBC is pretty damn good "You Cannot Simultaneously Be Politically Correct And Intellectually Honest!"
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Re: I know,I know....BCA
[Re: jrfan]
#7939679
08/17/20 08:21 PM
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Joined: Sep 2004
Posts: 2,138
jrfan
OP
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OP
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Re: I know,I know....BCA
[Re: jrfan]
#7939753
08/17/20 08:51 PM
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Joined: Jun 2011
Posts: 1,128
PonchoMike
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I have a BCA .450 12-inch upper on my AR pistol. I’ve not had a problem with it in about 40 rounds. Pretty accurate as well. I was surprised.
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Re: I know,I know....BCA
[Re: PonchoMike]
#7939786
08/17/20 09:09 PM
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Joined: Sep 2004
Posts: 2,138
jrfan
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OP
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I have a BCA .450 12-inch upper on my AR pistol. I’ve not had a problem with it in about 40 rounds. Pretty accurate as well. I was surprised. This is a 16", carbine length. What buffer/spring are you using?
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Re: I know,I know....BCA
[Re: jrfan]
#7939806
08/17/20 09:22 PM
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Joined: Aug 2015
Posts: 4,053
Pig_Popper
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This space is For Sale - inquire within ...
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Re: I know,I know....BCA
[Re: Pig_Popper]
#7939809
08/17/20 09:24 PM
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Joined: Dec 2016
Posts: 1,829
Adchunts
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^^^^^^^ That’s the direction I would go.
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Re: I know,I know....BCA
[Re: jrfan]
#7939810
08/17/20 09:24 PM
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Joined: Aug 2015
Posts: 4,053
Pig_Popper
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Try a different bolt carrier ? , is the bolt catch and magazine operating with firm and positive force - sometimes the mag followers don’t engage the bolt catch too well and it seems like it isn’t locking back but it’s a mag problem....
This space is For Sale - inquire within ...
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Re: I know,I know....BCA
[Re: Pig_Popper]
#7939876
08/17/20 09:57 PM
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Joined: Sep 2004
Posts: 2,138
jrfan
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OP
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If the new spring doesn’t work, that will be my next purchase. Try a different bolt carrier ? , is the bolt catch and magazine operating with firm and positive force - sometimes the mag followers don’t engage the bolt catch too well and it seems like it isn’t locking back but it’s a mag problem.... I’ve tried 3 different magazines. One is a duramag, one is a AR Stoner (Midway brand) and one is a Lancer 5.56 mag that has been modified with a Tromix spring and single stack follower. All pretty much have the same result. Being a side charging, I don’t have another carrier, and being a .450, I don’t have another bolt.
Last edited by jrfan; 08/17/20 09:59 PM.
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Re: I know,I know....BCA
[Re: Adchunts]
#7939882
08/17/20 10:02 PM
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Joined: Dec 2008
Posts: 41,083
J.G.
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^^^^^^^ That’s the direction I would go. I go there before messing with buffer springs.
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: I know,I know....BCA
[Re: jrfan]
#7941196
08/18/20 10:44 PM
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Joined: Nov 2011
Posts: 462
mike55070
Bird Dog
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Bird Dog
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Had basically the same issue used a 30 round AR mag D&H with one of the followers that you made for a single stack I forgot the brand or where I bought them but you can put 10 or 12 rounds in it and it runs great and even though it is a bear Creek it shoots as good as I can hold it Polymer mags wont work
Last edited by mike55070; 08/18/20 10:46 PM.
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Re: I know,I know....BCA
[Re: jrfan]
#7941588
08/19/20 02:55 AM
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Joined: Nov 2004
Posts: 2,406
rickt300
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Bear Creek has a great warranty, maybe send it back to them. My BCA Grendel has never failed to function or provide good accuracy. I did install a rifle buffer and spring.
Last edited by rickt300; 08/19/20 02:57 AM.
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Re: I know,I know....BCA
[Re: rickt300]
#7942099
08/19/20 03:49 PM
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Joined: Sep 2004
Posts: 2,138
jrfan
OP
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OP
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Bear Creek has a great warranty, maybe send it back to them. My BCA Grendel has never failed to function or provide good accuracy. I did install a rifle buffer and spring. I thought about this, and I may have to. I was just trying to keep from pulling the scope off and going through the whole process. I have the new spring coming this week and I may throw another gas block on it just for giggles.
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Re: I know,I know....BCA
[Re: jrfan]
#7942576
08/19/20 08:54 PM
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Joined: May 2011
Posts: 610
nesikabay
Tracker
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Tracker
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So, I acquired a Bear Creek Arsenal.450 Bushmaster upper. I knew better but I did it anyway. There, I got that out of the way, so please don’t rub it in.
If you’ve even only heard of BCA, you know they’re cheap, which is why I couldn’t resisit and I’m going to pay for it in the end. I bought it knowing that accuracy wasn’t going to be great or even good, but that’s not a problem. It’s surprisingly more accurate than I expected. However, I can’t hardly get it to cycle a 5 round magazine and I can’t get it to lock back on a empty mag at all. At first, I thought it was undergassed, but now I’m not so sure. It is throwing brass at about 2 o’clock. But I think it’s hitting the back of the ejection port (side charging) and throwing it forward. My brother in law took a slow mo video and it appears to be slamming the bolt open pretty hard, which makes me think it’s over gassed at this point. I have used both an H2 and H3 buffer with no change. I just ordered a heavier spring from Sprinco, but now I’m just throwing parts at it.
Other than telling me not to buy junk, does anyone have any thoughts?
First thought is your stupid. Got that out of the way. second thought is your really stupid and have reason to own a gun as stupid as you are. Other than than that your the poster chiled for ANTIFA
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Re: I know,I know....BCA
[Re: nesikabay]
#7942598
08/19/20 09:05 PM
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Joined: Sep 2004
Posts: 2,138
jrfan
OP
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OP
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Joined: Sep 2004
Posts: 2,138 |
So, I acquired a Bear Creek Arsenal.450 Bushmaster upper. I knew better but I did it anyway. There, I got that out of the way, so please don’t rub it in.
If you’ve even only heard of BCA, you know they’re cheap, which is why I couldn’t resisit and I’m going to pay for it in the end. I bought it knowing that accuracy wasn’t going to be great or even good, but that’s not a problem. It’s surprisingly more accurate than I expected. However, I can’t hardly get it to cycle a 5 round magazine and I can’t get it to lock back on a empty mag at all. At first, I thought it was undergassed, but now I’m not so sure. It is throwing brass at about 2 o’clock. But I think it’s hitting the back of the ejection port (side charging) and throwing it forward. My brother in law took a slow mo video and it appears to be slamming the bolt open pretty hard, which makes me think it’s over gassed at this point. I have used both an H2 and H3 buffer with no change. I just ordered a heavier spring from Sprinco, but now I’m just throwing parts at it.
Other than telling me not to buy junk, does anyone have any thoughts?
First thought is your stupid. Got that out of the way. second thought is your really stupid and have reason to own a gun as stupid as you are. Other than than that your the poster chiled for ANTIFA I really hope you are joking with this. Either way, would love to take that rifle and shove it so far up your [censored] you can taste gunpowder.
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Re: I know,I know....BCA
[Re: jrfan]
#7942826
08/19/20 11:29 PM
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Joined: Aug 2011
Posts: 6,168
Tactical Cowboy
THF Trophy Hunter
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THF Trophy Hunter
Joined: Aug 2011
Posts: 6,168 |
^^ that was uh..... interesting
OP, have you messed with the gas block that is on it at all? Might be misaligned.
The secret to a long life is to try not to shorten it.
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Re: I know,I know....BCA
[Re: nesikabay]
#7942846
08/19/20 11:40 PM
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Joined: Apr 2011
Posts: 1,325
RJH1
Pro Tracker
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Joined: Apr 2011
Posts: 1,325 |
So, I acquired a Bear Creek Arsenal.450 Bushmaster upper. I knew better but I did it anyway. There, I got that out of the way, so please don’t rub it in.
If you’ve even only heard of BCA, you know they’re cheap, which is why I couldn’t resisit and I’m going to pay for it in the end. I bought it knowing that accuracy wasn’t going to be great or even good, but that’s not a problem. It’s surprisingly more accurate than I expected. However, I can’t hardly get it to cycle a 5 round magazine and I can’t get it to lock back on a empty mag at all. At first, I thought it was undergassed, but now I’m not so sure. It is throwing brass at about 2 o’clock. But I think it’s hitting the back of the ejection port (side charging) and throwing it forward. My brother in law took a slow mo video and it appears to be slamming the bolt open pretty hard, which makes me think it’s over gassed at this point. I have used both an H2 and H3 buffer with no change. I just ordered a heavier spring from Sprinco, but now I’m just throwing parts at it.
Other than telling me not to buy junk, does anyone have any thoughts?
First thought is your stupid. Got that out of the way. second thought is your really stupid and have reason to own a gun as stupid as you are. Other than than that your the poster chiled for ANTIFA So, what is a chiled?
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Re: I know,I know....BCA
[Re: nesikabay]
#7942858
08/19/20 11:51 PM
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Joined: Aug 2011
Posts: 6,168
Tactical Cowboy
THF Trophy Hunter
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THF Trophy Hunter
Joined: Aug 2011
Posts: 6,168 |
So, I acquired a Bear Creek Arsenal.450 Bushmaster upper. I knew better but I did it anyway. There, I got that out of the way, so please don’t rub it in.
If you’ve even only heard of BCA, you know they’re cheap, which is why I couldn’t resisit and I’m going to pay for it in the end. I bought it knowing that accuracy wasn’t going to be great or even good, but that’s not a problem. It’s surprisingly more accurate than I expected. However, I can’t hardly get it to cycle a 5 round magazine and I can’t get it to lock back on a empty mag at all. At first, I thought it was undergassed, but now I’m not so sure. It is throwing brass at about 2 o’clock. But I think it’s hitting the back of the ejection port (side charging) and throwing it forward. My brother in law took a slow mo video and it appears to be slamming the bolt open pretty hard, which makes me think it’s over gassed at this point. I have used both an H2 and H3 buffer with no change. I just ordered a heavier spring from Sprinco, but now I’m just throwing parts at it.
Other than telling me not to buy junk, does anyone have any thoughts?
First thought is you’re stupid. Got that out of the way. second thought is you’re really stupid and have reason to own a gun as stupid as you are. ( Is that even English??)Other than than that you’re the poster chiled ( WHAT??) for ANTIFA FIFY
Last edited by Tactical Cowboy; 08/19/20 11:57 PM.
The secret to a long life is to try not to shorten it.
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Re: I know,I know....BCA
[Re: Adchunts]
#7943440
08/20/20 01:58 PM
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Joined: Dec 2012
Posts: 1,640
LeonCarr
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^^^^^^^ That’s the direction I would go. Ditto. I have three ARs equipped with BCA barrels and with the right load and a good rest they will shoot MOA or under at 100 yards with good ammo. Just my .02, LeonCarr
"Whitetail Deer are extinct because of rifles with telescopes mounted on them." - My 11th Grade English Teacher
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Re: I know,I know....BCA
[Re: nesikabay]
#7943808
08/20/20 06:36 PM
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Joined: Mar 2010
Posts: 2,482
TSU99
Veteran Tracker
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Joined: Mar 2010
Posts: 2,482 |
So, I acquired a Bear Creek Arsenal.450 Bushmaster upper. I knew better but I did it anyway. There, I got that out of the way, so please don’t rub it in.
If you’ve even only heard of BCA, you know they’re cheap, which is why I couldn’t resisit and I’m going to pay for it in the end. I bought it knowing that accuracy wasn’t going to be great or even good, but that’s not a problem. It’s surprisingly more accurate than I expected. However, I can’t hardly get it to cycle a 5 round magazine and I can’t get it to lock back on a empty mag at all. At first, I thought it was undergassed, but now I’m not so sure. It is throwing brass at about 2 o’clock. But I think it’s hitting the back of the ejection port (side charging) and throwing it forward. My brother in law took a slow mo video and it appears to be slamming the bolt open pretty hard, which makes me think it’s over gassed at this point. I have used both an H2 and H3 buffer with no change. I just ordered a heavier spring from Sprinco, but now I’m just throwing parts at it.
Other than telling me not to buy junk, does anyone have any thoughts?
First thought is your stupid. Got that out of the way. second thought is your really stupid and have reason to own a gun as stupid as you are. Other than than that your the poster chiled for ANTIFA Someone needs a time out...
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Re: I know,I know....BCA
[Re: jrfan]
#7944197
08/20/20 11:11 PM
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Joined: Nov 2004
Posts: 2,406
rickt300
Veteran Tracker
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Posts: 2,406 |
I have noticed some preety fugged up comments lately on several forums lately. Odd.
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Re: I know,I know....BCA
[Re: jrfan]
#7946711
08/23/20 03:32 AM
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Joined: Sep 2004
Posts: 2,138
jrfan
OP
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OP
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So, as suggested, I put an adjustable gas block on. I started with it almost closed. Wouldn’t even pull the spent shell out of the chamber. Worked on it until it was wide open. Was barely extracting a spent casing. I just happened to measure the gas port and it was close to .072”. After some research, I determined it wasn’t near big enough. Drilled it out to 5/64” and that didn’t work either. Drilled it out again at 3/32” and now it purrs like a kitten. Went through 3 different mags without any failures. All the brass was in a nice pile between 3 and 4 o’clock. In my research, I found that this is a VERY common problem with BCA. We’ll see how it lasts. For now I’m happy but, lesson learned.
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Re: I know,I know....BCA
[Re: jrfan]
#7947156
08/23/20 06:23 PM
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Joined: Aug 2011
Posts: 6,168
Tactical Cowboy
THF Trophy Hunter
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THF Trophy Hunter
Joined: Aug 2011
Posts: 6,168 |
The secret to a long life is to try not to shorten it.
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Re: I know,I know....BCA
[Re: jrfan]
#7947258
08/23/20 08:18 PM
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Joined: Jan 2007
Posts: 633
casterbuster
Tracker
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Tracker
Joined: Jan 2007
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I had similar issues with a AR Stoner pistol build in the same caliber i drilled the gas port to .109 and now it functions 100%
Seek first to understand... before trying to be understood
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