We don't have stumps to shoot here, but we do have termite mounds! They're pretty hard, but they suffice.
I've shot my Grizzlystik Safaris at them lots, and they hold up real well.
The other day, I decided to give my CX350s a go, wearing Magnus broadheads, out of peer pressure, lack of donkeys, and lack of suitable field point. I was pleasantly surprised at how well that arrow and broadhead took the beating those termite mounds dished out to it. Of course, I flexed and inspected for damage before each shot.
You know, after an unsuccessful hunt, the plod back through the scrub over many miles, through the heat, to get back to the car, is quite a chore. But, if you start shooting your way back, from termite mound to termite mound, the miles get eaten-up without you realising it!
Cheers, Ben