The grendel is a great cartridge, no doubt about. I love the 7.62x39 though, I have a CZ 527 carbine only 18 1/2" barrel. With Hornady 123grn SSTs I have taken a number of sambar deer down here, they have all been one shot kills.

Using 2219 (H322 I think to you blokes) I am getting 2,430 fps
with no presure signs, I could a little more i'm sure but can't see any reason to, 3 shot one hole group has me very happy. A lot of pig shooters here use the same load with great success

Johno