ORIGINAL: MilDotMaster
Don't go to a 85 grain tip...it will throw your FOC out of limits and make your arrow too light for hunting. I was told never to go any lighter than 370 grains for a hunting arrow. I'm at 395 grains and several people that are experts in my area say that is still too light. Making arrows lighter for more speed is the wrong direction. Keep the right arrow for the animals sake and change the bow if speed is your priority. If you still can't get the speed you want then you should concider being happy with the speed you have. Clean kill with high KEand good penetration should be your first concern. If you happen to get higher speeds, that's just a plus.
You should at least give a BowTech Bow a try and see how you like it. Their advertised speed is right on the money. Not trying to start a war about what bow is better, just saying at least try it out. I was set on getting a Mathews Ovation until I shot the BowTech. Keep an open mind and give it a try. If you don't like the BowTech at least you will be reassured that the Mathews is the best bow for you.
I don't know who told you that but i shoot 65 pounds and my arrows weigh 328.5thats 5.05 grains per pound and i acheive pass throughs!!!!!!!!jmo