Been having a few issues stabilising my 800 grain Easton FMJ's that I'm using for asianic water buffalo. I'm currently running four 2" blazers which are stabilising fine and I'm happy with the speed, but I cannot avoid a little bit of fletching contact on my QAD ultra rest. I've tried using 4" vanes and they eliminate the contact issue, however I lose an unacceptable amount of speed, which is so great that it is compromising my accuracy (arrows drop away more than twelve inches from my existing forty yard sighting :/ )

Any ideas and help would be much appreciated!

Try some Duravane LP400 vanes. They're only about 1 grain heavier than Blazers but have a height of 3/8".

We had sights on bows that had to be set for every five yards, as the arrow drop was that severe.
Back then learning distance, like ten, fifteen, twenty, twenty five yards was very important. Mistake the distance by five yards and it was a missed shot.
Wonder how fast a water buffalo can break a modern $900 bow?

Look at the Bi-Delta Vanes. Lower profile than the Blasers. I shoot the 2-1/2" Sharks Tooth with 425grn GT Velocity XT's. They even make a model lower profile than the Sharks Tooth.

Unfortunately with a heavey arrows you loose distance. The hitting power is second to none pretty much though. I used to shoot Easton 2419 out of my old Bear Bruin bow and I had it cranked up. I ended up putting another knock on my string so I could get more lift out of it. Perhaps it is not the best idea but it worked for me. Good Luck with your hunt. I have also read an article quite some time ago about hunt those. If I can recall it right they recommended 2 blades in order to get the arrow between the ribs.. Again good luck with your hunt.

Trying to find out about vanes guys not broad heads, I hunt buffalo a minimum of twice a month, and have been for the last few years and know the ins and outs of what works in the broad head world! I like the five yard pin suggestions, as I currently only use the ten meter increments but I also use a rangefinder because of the large drop, and as for the advice on the vanes, will definitely be chasing some bi-deltas and sharktooths down!

Thanks everyone

With which part of your QAD are you making contact?

I guess you could call it the 'flipper', the plastic drop away segment, I've got it sorted for now till my 3" vanes arrive, I just have to tweak the nocks on my arrows with 4x2" xblazers really carefully and test them before hunting use, went out on the weekend and knocked down two pigs and a buff so this obviously working for the time being. But am definitely trying the three inch vanes