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...
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