Like someone else stated... I'm a huge fan of partitions. They aren't paper punching bullets or LR bullets, but in the world of hunting they are as good as it gets to me. I would consider 3/4 inch groups pretty good.
I have two loads that shoot that or better when I'm on my game, one is the very first load I ever loaded for a 270 win and the other is a 223.
In my experience I have seen better results with partitions further rather than closer to the lands. My 270 load is a very mild one, maybe mid range between min and max and the 223 is mid/upper end, so I wouldn't say they like to be pushed hard.
It's hell eatin em live