Without looking at any charts, I'd think your new arrows a lighter than your old arrows? Depending on the bow, you MAY need to make adjustments for as little as a 20gr. change.

I would agree with Boss as even a slight change might cause issues. I'd also chrono the bow/arrow combinations and see what the speed difference is as that could have you planeing with the broadheads. It could also be a combination of these factors. Did you change anything else when you switched?

you didn't mention your arrow length but at any rate I think you may be slightly underspined. Back your bow off about 6 pounds and see how it does.



Tuning is in question also and the most likely culprit.



I can shoot aluminum arrows well from a bow tuned to carbon but the reverse hasn't been the case for me. Carbons are more girly about the arrow rest tune.



I always, ALWAYS, buy carbon arrows spined above the pull weight on my bows, ie, my go to singlecam pulls 72 at 29" draw. I use ACC 371-300 shafts cut to 29 3/4".



also the diameter of the arrows are different and can slightly change the nocking point on the string or more likely and critical, the verticle of the rest. Sometimes a minor tweak with the rest can help greatly. Your bow may be on the edge of tune and the lighter arrows amplify the problem, making it noticable.



If it still shoots off with the weight backed off, I would lower the arrow rest just a hair until the bhs shoot with the fpts.



Having the bow in proper tune is the first step toward precision shooting with compounds.

Ncboman - After reading you post, NOW, I remember why I stopped shooting compounds.

You need to start over from the beginning. First you need to select a carbon shaft spined for your setup. Then you need to bare shaft tune it to your bow with an appropriately weighted field point or broadhead. I always practice with only the broadheads I am going to use. Get rid of the 90 grain Muzzys and get a heavier head. The Muzzys are a great head and I have used them in Africa with great success, but I shoot exclusively cut on contact heads now, which you should consider. I shoot the 190 grain Grizzlys with a 125 grain steel insert for a total broadhead weight of 315 grains (heavier than the total arrow for some guys). My finished arrows with broadhead are 650 to 750 grains depending on shaft selection and shaft inserts. Shoot heavy arrows with plenty of weight up front. You will never regret it. Forget the conventional front of center propoganda and experiment till you get an arrow setup that shoots bullet holes when bare shafting it. Then when you put on some feathers or vanes you will never have a stability issue. Again, shoot HEAVY for the best penetration from your bow. Did I say shoot HEAVY? SHOOT HEAVY!



Now get a trip to Africa booked NOW! Don't wait. Then be prepared to go again and again!