7.62NATO or 6.8SPC for a SPR type rifle?
I've been wanting to buy an SPR/DMR-type rifle for awhile now, I'm just not sure I like my options. I'm wanting a rifle primarily for 300-500m, maybe stretch to 600, but no more, and to be honest, 0-300m is a lot more important than 500-600m. 5.56mm is out, I'm a civilian, so I'm not locked into what the military uses, while hits are no problem, it just doesn't have enough poop at those ranges to satify me. 6.5Grendel is out too. Too proprietary to be useful. This leaves 6.8SPC and 7.62N. Reliability and durability are important to me, and the stories of AR-10 type rifles being rather undependable are a bit too common for my taste. 6.8spc mags have been questionable at times, but the rest seems ok. I hate to add another caliber to my already too large collection of 5.56, 7.62N, 7.62x39, 30-06 and 30 carbine, but maybe at this point, it doesn't matter. I've looked at trajectory tables, surprisingly, 6.8spc is very similar to what 7.62Nato is, so that isn't really a factor. I do like the lighter weight of a 6.8spc setup, I don't feel as though it needs to be very heavy since it's not a full blown sniping setup. For optics, probably Leupold 2.5x8 MR/T, or a 5.5 or 6x ACOG for simplicity. If not for pending assault rifle crap here in Illinois, I'd just wait for a SCAR-H, but that might be too late.
So anyway, give me some thoughts, perhaps some of you have a better theories than me.