Steve S Posted December 26, 2022 Report Share Posted December 26, 2022 I have built a 22-250 AR10 platform. Shoots and ejects perfectly. It will not cycle the next round. I am assuming that I need to start experimenting with different springs and buffers. Anyone have any ideas on buffer weight and spring type. Current is the standard 308 buffer spring and buffer. I have several springs and adjustable buffers to play with. Quote Link to comment Share on other sites More sharing options...
Armed Eye Doc Posted December 26, 2022 Report Share Posted December 26, 2022 A couple of questions before you start changing things... Does it hold the bolt open on an empty mag after shooting with one round in the mag? Will it hand-cycle more than one round from a magazine? Have you tried an odd and even number of rounds in the magazine? Quote Link to comment Share on other sites More sharing options...
shooterrex Posted December 26, 2022 Report Share Posted December 26, 2022 Like the waterboard thread. List everything. Give us an idea what we are dealing with. Barrel manufacturer and gas port and length would be a good start. Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 4 minutes ago, Armed Eye Doc said: A couple of questions before you start changing things... Does it hold the bolt open on an empty mag after shooting with one round in the mag? Will it hand-cycle more than one round from a magazine? Have you tried an odd and even number of rounds in the magazine? Yes it holds the bolt open. yes it will hand cycle, no problem. no I have not tried that, but I will. Usually all even/full clip. Quote Link to comment Share on other sites More sharing options...
shooterrex Posted December 26, 2022 Report Share Posted December 26, 2022 If this is a new build is the Bolt dripping with lube? Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 2 minutes ago, shooterrex said: Like the waterboard thread. List everything. Give us an idea what we are dealing with. Barrel manufacturer and gas port and length would be a good start. Bear creek UCG, side charging (first one I have built with this) All other parts, tactical, AERO, all good quality parts installed. no gas port. Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 1 minute ago, shooterrex said: If this is a new build is the Bolt dripping with lube? No Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 6 minutes ago, shooterrex said: Like the waterboard thread. List everything. Give us an idea what we are dealing with. Barrel manufacturer and gas port and length would be a good start. 22” barrel Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 3 minutes ago, shooterrex said: If this is a new build is the Bolt dripping with lube? No Quote Link to comment Share on other sites More sharing options...
shooterrex Posted December 26, 2022 Report Share Posted December 26, 2022 So there is no gas port at all or you haven't measured it? Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 Yes it holds the bolt open. yes it will hand cycle, no problem. no I have not tried that, but I will. Usually all even/full clip Bear creek UCG, side charging (first one I have built with this) All other parts, tactical, AERO, all good quality parts installed. No gas port Yes it holds the bolt open. yes it will hand cycle, no problem. no I have not tried that, but I will. Usually all even/full clip nondrip from the bolt sorry, just learning this forum for responses Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted December 26, 2022 Report Share Posted December 26, 2022 On 12/26/2022 at 12:55 PM, Steve S said: Current is the standard 308 buffer spring and buffer. What standard would you be referring to? Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 No gas port on this UCG. If there was this would be a whole easier. Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 Typical 308 spring and buffer . I don’t have my scale to weight buffer. Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 Same as I have in my 308 AR10. I would have to go way back and check the actual order for the part number. Quote Link to comment Share on other sites More sharing options...
shooterrex Posted December 26, 2022 Report Share Posted December 26, 2022 So if there is no gas port in the barrel you have a single shot. You can cycle the rifle manually but it won't cycle itself. There has to be gas going back to the BCG to operate the action. Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 That does make sense. It does have to have gas to operate the action, yes. I will break it down and investigate this again. It is not a single shot. Will get back to you on this. Quote Link to comment Share on other sites More sharing options...
shooterrex Posted December 26, 2022 Report Share Posted December 26, 2022 This is the kind of info we need to help you over the internet. Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 I will share everything I know about this . thanks Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 26, 2022 Author Report Share Posted December 26, 2022 Okay so the gas port is fine , nonissue as far as I can see. It also ejects properly, all shells right at 4oclock. All of them. I dont believe I have a gas problem. Quote Link to comment Share on other sites More sharing options...
Armed Eye Doc Posted December 27, 2022 Report Share Posted December 27, 2022 1 hour ago, Steve S said: Okay so the gas port is fine , nonissue as far as I can see. It also ejects properly, all shells right at 4oclock. All of them. I dont believe I have a gas problem. But it only ejects one without having to hand cycle. Large frame AR barrel manufacturers across the industry frequently drill their gas ports too small. They then pair it with a lighter buffer and/or weak spring to counter not enough gas. Please humor us and measure your gas port even if you think it isn't a problem. Weighing your buffer will also help us to make sure your recoil system is balanced to your gas system. These are the two most common problems causing the issue you are having. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted December 27, 2022 Report Share Posted December 27, 2022 (edited) You either have a gas system issue, or a recoil system issue, or a feeding issue (and that's magazines). This is gonna come down to one of those 3 things, or a combination. Gonna need those technical gun specs that have been requested of you, per the details in the waterboarding thread that was linked above. Read that thread first, so you can see the amount of detail necessary to diagnose a gas gun functional issue over the internet. Edited December 27, 2022 by 98Z5V Quote Link to comment Share on other sites More sharing options...
98Z5V Posted December 27, 2022 Report Share Posted December 27, 2022 The only company that I know of that ever pulled off a functional 22-250 complete gun, right from the factory, was Olympic Arms. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted December 27, 2022 Report Share Posted December 27, 2022 7 hours ago, Steve S said: I have several springs and adjustable buffers to play with. Good. What's the internal depth of your receiver extension? Not the overall length, the internal depth. It's either gonna be 7.000" internal or it's gonna be 7 5/8" internal, or it's manufactured wrong. 6 15/16" is a very acceptable answer, if that's the case. Next, after that answer, do you have any AR15 adjustable carbine buffers that you can configure to 5.4oz (H3 weight), and either an Armalite EA-1095 spring or a Sprinco Red spring? This will make a functional recoil system, IF they're installed inside a receiver extension that's 7 5/8" internal depth. You install a recoil system identical to what I described, and function test your gun and tell me what's happening - and I can tell you if your gas system is gonna need work. Of course, I'll need all the specs on your barrel, in order to do that. I need to know that your gas block journal diameter is, what your gas PORT diameter is, what gas system you're running (it's either midlength, rifle, or some weird rifle+2" system). I need to see a pic of how far your gas tube protrudes into your upper receiver, with your BCG out, to verify how far it reaches into the cam pin cutout in the upper receiver... ^^^ You get that information into this thread, and I can make your gun run. I guarantee you that. This is the level of detail we're talking about. This is why we have the Waterboarding thread in the first place - we have to sometimes waterboard people to get the pertinent details out of them... It can get frustrating, from our side... Quote Link to comment Share on other sites More sharing options...
Steve S Posted December 27, 2022 Author Report Share Posted December 27, 2022 Okay, a lot to gather here. Will get all this tomorrow. This is the 3rd upper carrier group also from BCA. The first two had firing pin issues which have been resolved. It definitely has been a challenge to get this 22-250 100%, buts that’s okay. That’s what building and testing is about. The mags came with the upper Carrier group as part of the package. All 3 are the same and the cycle issue appears to be with all 3. I do have adjustable buffers. Will measure the tube depth. Don't have the red spring, have a yellow and a few custom springs (AR10) from AR15Discounts. I have seen the gas port drilled too small as was my 6.5. I drilled out to spec and it solved the that issue. gas system is rifle length, Will send pics and info on requested specs later tomorrow. Appreciate the help with this. Quote Link to comment Share on other sites More sharing options...
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