Suggest a 4 bladed, fixed and rather small overall BH.Such BHs tend not to steer the bolt like larger ones did for me. That amounst to the Slick Trick magnum in 100 gr for me. I use the same bolts but made mine with 110 gr brass insert for higher FOC ( not the 45 gr aluminum insert) and 2" Blazer vanes. I also spray the back end with white laquer and overspray as short distance with florecent paint for better visability. Easier to see and adds little weight to the back lke wraps and lighted nocks do.These bolts fly like DARTS. Accuracy is simply awesome. So is terminal performance. This year I hit a big doe in the paunch (arrow deftected on a twig I overlooked) it went out just behind the off side lung. She went less than 20 yards lay down and expired in about 10 minutes.