Basically I like it because it turns a normal size AR15, into a viable deer hunting rifle out to 300m or so, covering basically 100% of the deer hunting I do. The ballistic effeciency of the 123gr projectiles blitz basically anything else you can load into an AR15. If you run a longer barrel than I do, you can run it equal to, or a little better than a .308 running heavy match projectiles, for long range target shooting. The biggest downer is the cost of brass. I am really tempted to buy one of the Howa's to have a play with the cartridge in a bolt gun. The AR limits it's performance in that you don't want to run a load much hotter than 50kpsi or your rifle will start shitting out bolt lugs.
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