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+--- Thread: 6mm ARC vs 6mm BR (/showthread.php?tid=692)
6mm ARC vs 6mm BR - pavementends - 07-08-2022
Has any one who has both ever measured the case capacity (H2O) My google foo has failed me. Just looking for a ball park difference.
Thanks
RE: 6mm ARC vs 6mm BR - muvef - 07-29-2022
Per Wiki:
PPC/32 gr H2O
Arc/34 gr H2O
BR/39 gr H2O
RE: 6mm ARC vs 6mm BR - CZ527 Guy - 07-29-2022
Just to re-enforce, The case capacity of Lapua 6 BR brass is about 38-39.5 grains of H20, after fire-forming per this article linked below.
https://www.6mmbr.com/6mmbr.html
6mm ARC case capacity of 34 grains of water
https://gundigest.com/gear-ammo/accessories/flattening-the-curve-with-hornadys-6mm-arc#:~:text=What%20Exactly%20Is%20The%206mm%20ARC%3A%20It%20is,all%20other%20popular%20AR-15%20cartridges%20in%20this%20arena.