We I go to a new size of arrows I take about four are five arrows and shoot groups. I use 125, 100 and 85 grain points and see with holds the best groups. I shoot the heaver point through paper and tune the bow then go out side to group tune my arrows. The last two sizes of arrows I have shot Goldtips 5575 with 4 inch vane and the axes 400 with 2 inch blazers have group best with 85 grain points and broadheads. I group them at 20 and 40 yards and starting with 125 grains going down in size to 85 grain. I can see the groups get smaller are bigger but, with the 85 grain tips that the way it comes out for me maybe not for you. I have always let my group tell what weight tips to use not just what some one said should work. The axes arrow have been working great for me. I'm shooting 2 inch group at 30 yards, one arrow dead center in the x at 20 and blowing through fast on every deer I shoot.
When I got my new Black Ice last fall and set at 65 lbs. I tried 100 hundred grain tips and my groups opened up to about a 3 1/2 to 4 inch group at 30 yard and the 85,s went back down to a 2 inch are less groups.

Good Luck