Very "not bad"! Each Hummer rifle has it's preferences - mine likes the Hornady best, though the CCI is still good.
Other guys find their gun likes the CCI best, or the Federal.
I haven't had the chance to try Remington or Federal ammo yet.
My Wally only carries the CCI, but I can get the Hornady at our local gunshow. One shop I know has it, but the shyster wants $15 a box!!

I'm willing to pay good money for good ammo, but I ain't Bubba Gates - the paycheck only goes so far.
It would be mighty interesting to see that big-bore roll a deer or two!