i want to build an AR in a hunting caliber. i am thinking 6.8 SPC, or 6.5 Grendel. which of the two has better parts availibility? i have read around on here, but what exactly do i need? is there a parts list anywhere? what about tools? thanks for any help that may be offered.
adam

458 socom

i would prefer something for longer range work also. 3-400 yards. i already have a 45-70, so i am covered on my big 45 rifles.

I have not looked at bullet types for the 6.5, but I believe it was designed more for paper punching and I don't know if proper bullets for hunting are readily available for it.  I could be (probably? ) am wrong, but who knows.  Either way, the ONLY thing that is different is the Bolt, barrel and magazine.  Everything else you just use the same standard parts as usual.

Brian

I've heard that 6.8SPC is pretty good at killing things, so thats probably what I'd use if I were building a hunting rig, lol. Never really looked into it though. Check around and see what loads are available in both calibers before making a choice.

Well, I did a little searching and indeed you can find ready loaded ammo constructed for hunting.  And of course if you reload yourself then there is the obvious tons of 6.5 hunting bullets you can use.

So it now really becomes a personal chocie.  I chose 6.8 SPC for my rifle.  But there really seems to be only marginal differences in the effective use on deer sized game.  Choose the one you feel will have better ammunition availabilty 5, 10, 25 years from now and enjoy

Brian