I've seen 5 shot respond in the past on this type of head, said it opened a little slower than some, was very strong and a good quality head with strong sharp blades. I'm pretty sure he was referring to the large cutting diameter 100 grain head (1.75" cutting width). I've used this head in the past, with borderline kinetic energy, with good results. They cut a HUGE hole...

I'm not sure what the cutting width is on the 75 grain, but Wasp builds quality stuff and as long as you're flinging them with enough power, they should do well for you.