First; Besides making the bow a little louder, what effect will a lighter arrow (carbon) have on my longbow?

Second; I read on here that you shouldn't have a broadhead with a ferrule bigger than the arrow diameter. Is this true? I have some Zwickey Eskimos that will fit 11/32" shafts, I have long 5/16" adapters to glue them to and ICS Bowhunter 400 shafts to put them on. Does that setup work?
The arrows weigh around 480gr. and I know this is enough for hunting. But I was curious about the BH's.

Third; I have a turkey tag and hopefully I'll get a shot at one this fall. Do I need Gobbler Stoppers? And if a good shot is made are turkeys hard to track?

Thanks to all who answer

Bakes  

Lighter arrows fly flatter but penetrate less. I like 10-12 grains per pound of draw weight.

Don't worry about broad head ferrule slightly large than the shaft, may even help penetration.

I don't like anything that inhibits penetration on a turkey. They are amazingly hard to shoot through because of the feathers. They are very tough to track, seldom a blood trail. Some folks even use string trackers to try to help find them. Best bet is to hit em good and not have to chase them.

i shot my turkey in the middle of the back right where it is on a mcinzie target.dropped like a brick no tracking whatso ever

QuoteOriginally posted by Shaun:
Lighter arrows fly flatter but penetrate less. I like 10-12 grains per pound of draw weight.

Don't worry about broad head ferrule slightly large than the shaft, may even help penetration.

I don't like anything that inhibits penetration on a turkey. They are amazingly hard to shoot through because of the feathers. They are very tough to track, seldom a blood trail. Some folks even use string trackers to try to help find them. Best bet is to hit em good and not have to chase them.

Ditto.

If your arrow is too light then it's just like a dry fire.  With trad gear arrow weight is important for more than just quieting your bow.  A simple rule of thumb is 9-11 grains per pound of draw weight minimum.

Use a string tracker for turkeys.

I'm no expert turkey bowhunter, but I did manage to get one this fall. Shot him with a Magnus two blade from around 20 or so yards; no pass through, and he died on the spot. Autopsy showed both lungs wasted. I was using a cedar arrow; probably around 550 grains out of a 55# longbow.