Phil3 Posted December 13, 2020 Report Share Posted December 13, 2020 I have a box of many AR-10(b) parts which I stopped building from when CA made building what I wanted illegal, but now, I have moved out that state and CAN build what I want. So, I am resurrecting my AR-10(b) project. One thing I do need is a barrel, but would like to get something chambered in 6.5 x 47 Lapua. Are there any known (or possible) issues using this cartridge? Note, this cartridge uses a small rifle primer. Krieger will make me an AR-10 barrel, chambered in 6.5 x 47, to the length and contour I want, but am fuzzy on what can (or should) be done with regards to chamber dimensions. For bolt guns, I sometimes use a custom reamer for chambering, but something tells me I best stick with SAAMI spec chambering on a semi-auto. I would also like to know how harsh the AR-10 is on brass, since the brass I will be using is pricey Lapua. Lastly, will I need to do any tuning of the gas system to work with this cartridge. The bolt carrier group is Armalite, as is everything else, except the lower receiver (Noveske N6). If anyone wants to know why I am choosing the 6.5 x 47 Lapua, I can explain that. Thank you, Phil Quote Link to comment Share on other sites More sharing options...
Magwa Posted December 13, 2020 Report Share Posted December 13, 2020 6.5 x47 Lapua is a great caliber I shoot 6.5 Creedmoor in my LR 308 and I shoot 6.5x284 Norma in a bolt gun the 6.5's fly really well i wish you all the luck with the build what is the col of a loaded round in 6.5x47 Lapua? Quote Link to comment Share on other sites More sharing options...
Lane Posted December 13, 2020 Report Share Posted December 13, 2020 I had a few custom barrels made by Compass Lake; from Green Mountain blanks. Not sure what the turnaround time is on custom barrels with Compass Lake these days... Not try to talk you out of your current plan one bit. But as you stated yourself; there are a few things to consider either way in terms of gas system, and chamber. Compass Lake will cut a chamber to brass you send in. Doing it yourself is also a fine option of course. Very much interested in your decisions; and progress along the way. Godspeed Sir! Quote Link to comment Share on other sites More sharing options...
Phil3 Posted December 13, 2020 Author Report Share Posted December 13, 2020 I sent an e-mail to Compass Lake, with all the specs and requirements I thought they may need. I can provide them the brass and the Armalite bolt carrier group for proper fitment. One thing I thought of that I am unsure about. The Lapua brass uses small rifle primers. I do not know if that may pose any problem with the Armalite bolt firing pin. Phil Quote Link to comment Share on other sites More sharing options...
Phil3 Posted December 16, 2020 Author Report Share Posted December 16, 2020 I am the OP. I did e-mail Compass Lake about creating a 6.5 x 47 barrel. They replied and said they do not chamber in 6.5 x 47. Oh well. Krieger will chamber in 6.5 x 47. Contacting them with a few questions. Phil Quote Link to comment Share on other sites More sharing options...
Thirstydg323 Posted December 16, 2020 Report Share Posted December 16, 2020 https://deadshotbarrels.com/custom-ar-barrels/ar-10 Quote Link to comment Share on other sites More sharing options...
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