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Post by gunmutt on Dec 29, 2015 5:25:01 GMT -8
Are the bigger name brand receivers any better than the lower brand name (squared for barrel extension)? I am wanting to stay with forged. BCM, LMT, Seekins, Spikes vs Anderson or other brand name. I figure most are from the same manufacturer
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Post by GLSHOOTER on Dec 29, 2015 6:45:37 GMT -8
Are the bigger name brand receivers any better than the lower brand name (squared for barrel extension)? I am wanting to stay with forged. BCM, LMT, Seekins, Spikes vs Anderson or other brand name. I figure most are from the same manufacturer Not really. Even the most well names are not always square. I know Ritch has done more than one of the "big" names that were needing attention. As a minimum checking it is always a good idea. Greg |
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Post by gunmutt on Dec 29, 2015 7:14:18 GMT -8
How do you go about checking one?
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Post by GLSHOOTER on Dec 29, 2015 11:12:58 GMT -8
How do you go about checking one? Ritch uses a tool from Brownwlls that goes up through the front and has a lapping surface on it. I believe he just pulls it down tight and makes a rotation. High spots show up fast. Greg |
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Post by peabody on Dec 30, 2015 22:02:35 GMT -8
I picked up the Wheeler receiver lapping tool several months ago and have used it on 5 receivers thus far (Aero Precision, PSA, Spike's and 2 Anderson's). All of the receiver faces were out of square to some degree and had uneven contact surfaces. After facing, they were squared up and the faces were flat, creating a complete and uniform mating surface for the barrel. Some doubt it makes a difference. Others swear by it. I can only say that all of the receivers I've lapped had less than optimal mating surfaces. And one of the receivers I lapped was my already built and tested 6.8 SPC with a Wilson lightweight hunter barrel (sorry BHW). While it shot well before lapping (~1.5 MOA), the groupings improved by ~0.5ish MOA after the lapping/reassembly and re-zeroing. And that was all done with Sellier and Bellot 110 gr FMJ factory ammo. Nothing to write home about. But the lapping definitely improved the accuracy, from my perspective. One other advantage to lapping is that you can trim back the receiver face to get the gas tube holes in the barrel nut and receiver to align within proper torque range. So if you encounter a nut that won't align, you can trim the receiver a bit to change the alignment point when torqued. Hope that makes sense... Here's a link to a clip on YouTube that explains the concept and process pretty well: www.youtube.com/watch?v=7uMtxvdZ0HM |
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Post by GLSHOOTER on Dec 31, 2015 7:30:57 GMT -8
Thanks for that post with some anecdotal evidence of the benefits of the process.
Greg
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Post by gunmutt on Jan 1, 2016 9:22:44 GMT -8
How much does this change the headspacing or does it affect it at all
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Post by GLSHOOTER on Jan 1, 2016 9:35:19 GMT -8
How much does this change the headspacing or does it affect it at all I has no effect on head spacing. One positive is that squaring the barrel upper interface will make lug stress more equal and the more even stress will in turn lower potential lug breakage. Greg |
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Post by gunmutt on Jan 1, 2016 12:41:42 GMT -8
good to know. I just ordered the tool online. I have several different brands of uppers so I will post the results.
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Post by gunmutt on Jan 11, 2016 6:34:06 GMT -8
Well o got eh Wheeler tool last week and over the weekend I stripped down my .223 and lapped the upper. It is a noveske forged, nothing special. It was not square at all. One side completely was higher than the other. During reassembly the barrel nut aligned at a much lower torque - say around 55-60 ft lbs. Is that enough. Seems most of my rifles have closer to 80-90 torque
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Posts: 0
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Post by Deleted on Jan 11, 2016 16:12:03 GMT -8
Well o got eh Wheeler tool last week and over the weekend I stripped down my .223 and lapped the upper. It is a noveske forged, nothing special. It was not square at all. One side completely was higher than the other. During reassembly the barrel nut aligned at a much lower torque - say around 55-60 ft lbs. Is that enough. Seems most of my rifles have closer to 80-90 torque 55 to 60 ft lbs is perfect. More torque is unnecessary. |
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