I bought a new Mathews ZXT this year to get back into bow hunting after a couple year break bow is set to 28"&70lbs. I had a dozen Carbon Express Piledriver's cut to 27.25" they weigh in a 11.3 gpi total weight with nocturnal nock & 100gr head is about 470gr. What I'm getting to is I still have a couple packs of 2 blade rage that I've never shot from a couple years ago is this combo going to deliver enough energy and penetration to use such a large cut broadhead or would I be better with a fixed blade? I don't know the speed with this set up but IBO is 325 so I'm thinking with the heavy set up I maybe in the 260's