As the title states I am wanting to put together an AR15 Upper Receiver Assembly to use with my existing AR15 Lower Receiver Assembly strictly for the purpose of Hunting Whitetail Deer and Coyotes. Probably get more use for Coyotes than Whitetail Deer given the current state of our deer population around here.
At any rate am looking for a cartridge that will extended the range further than my current 16" .223 Upper Receiver Assembly for Coyotes and have enough bullet weight and performance to cleanly take Whitetail Deer. I have a DPMS Slick Side Flat Top Upper Receiver sitting here that a friend gave me, so I have a start.
I am wanting this to be a 20" Standard Weight Barrel, preferably stainless steel.
The cartridge that keeps sticking in my head is the 6.5 Grendel. I like the idea of the high BC Bullets and have read several good things about the 123gr. Hornady A MAX and SST Bullets for the 6.5.
What say all of you guys? Good choice or bad choice?