The Grendel is low recoil, but not as light as 223. 6.5G kills better than 223 but not enough to get worked up over inside 100 yards or so. I've been comparing the results of 223 vs 6.5G as I clean my kids' deer for years now.
Ruger really ought to offer the 6.5G or at least a fast twist 223 with a compact stock. What they have now is just too long. AR adjustable stocks are a huge advantage to a growing child.
