The though the 6.8 used the same bolt as 223. The 6.5 uses the same (larger face) bolt as 762 Russian. But I found this: "6.8 Spc is based on the 30 Remington" And both require different bolts.
The case capacity is very similar because the 6.5 has the shoulder moved back. I did not expect to get called out on that. The 6.8 is optimized more for lighter bullets. You have a good point on the capacity - and good fact checking all around.
I may have under estimated the 6.8
I appreciate the correction. Might go 6.5 my self but it maybe more a coin toss than what I understood.
