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Zero Effect Arrow Rest by Muzzy ~ 06/28/2000


    Another new arrow rest, there must be thousands of them on the market already. And when I heard that a Zero Effect was headed my way, well I didn't get to excited to be honest with you, and I was kinda scratching my head as to what this one may be all about. Now I figured I'd mount this rest up, shoot a few hundred rounds through it, write about it, then pull it off and put my old trusty shoot-thru rest back on and get back to business. Now I don't think so. After shooting better than 1,000 rounds over the past several weeks with the Zero Effect, I am sticking with it.

Zero Effect ???

Well I must say when the Zero Effect arrived, I was a bit skeptical. It sure didn't look like any arrow rest I had seen before. My first impression was "here we go again, another gadget". It was a combination of an overdraw, roller cable slide, a strange looking hook shaped piece that looked like a Grizzley bear claw (this turned out to be the actual arrow rest or holder) and a pivoting arm to connect the cable slide to the riser and drive the motion of the rest. Lots of moving parts I thought, and probably tough to install...

After removing it from its packaging and examining it a bit closer, I could see what Muzzy had in mind here. The concept is a simple one. If an arrow rest is the source of many tuning problems and many times attribute to arrow flex, torque and clearance, then lets take the arrow rest out of the picture when the arrow is released. Sounds simple enough anyway.


Upon removing the rest from the package, it looks a bit complicated to install. But Muzzy packages a really good video tape to help with your installation and setup, not to mention it has some good entertaining footage of an actual hunt or two featuring the Zero Effect in action.

Just take a good look at the rest, examine it, review the video a couple of times, review the enclosed instruction sheet, then look the rest over again and you should not have any trouble. I could install one in just a few minutes now that I know what is going on. And access to a bow press is helpful.

I mounted the Zero Effect on my Darton Yukon which has a 29 inch draw, pulling 60 lbs, and shooting 26 1/2 inch 2114 XX75 shafts that are topped off with 100 grain field points.

How It Works

Here's how it works and there's no sense in re-inventing the wheel here. So I'll quote the good folks at Muzzy on how the Zero Effect functions.

"At the beginning of the draw the Zero Effect is down and away from the arrow. As the arrow is drawn, the unique hook shape of the rest rises and "grabs" the arrow from any position on the shelf sliding it onto the "V" notch for release.

Approximately three quarters of the way through the draw the arrow rest makes contact. The arrow slides in the "V" and the rest begins to lift the arrow into a launch position. This happens smoothly and quietly and is driven by the action of the cables on the cable guard.

At full draw the arrow is in a normal pre-shoot position, but at the moment of release the Zero Effect Arrow rest drops down and away as the cable slide zips forward. The result is perfect arrow launch with no drag, no interference and no torque because the arrow rest isn't even in contact with the arrow."


Shooting & Arrow Speed

I was impressed right from the "get-go". Before I removed my old rest (2 prong shoot-thu type), I ran 3 arrows through a chronograph so we could measure the decrease or increase in arrow speed as a result of the Zero Effect. I knew with the combination of moving parts, no rest drag on a shaft, and increased work on the cables, the arrow speed must swing one way or another. The chronograph indicated the little Darton was shooting a nice 250 feet per second with my old rest which had been paper tuned, so the arrow flight should have been at its max. efficiency.

Now the Zero Effect was installed and nothing was adjusted. I did not touch the nock point, or try to tune the new rest in anyway. Three arrows were fired through the chronograph and the arrow speed had gained 1 foot per second. Not very impressive, but it did not slow the arrow down either. At 20 yards, I shot several consistent 3 - 4 inch groups with this totally un-tuned setup.

Next I made an adjustment to the center shot alignment, just the "eyeball" type and adjusted the nock point and leveled the "arrow to rest" according to the Muzzy supplied video tape. Now my groups tighten up considerably, I had to spread my shots out on my 5 spot target to save on knocks.

Now, back to the chronograph. Again, 3 arrows fired and the bow had gained another 6 feet per second, for a total of a 7 second gain overall. Pretty amazing, I have a marked improvement in arrow speed, good arrow flight, and I had yet to run a single arrow through paper with this rest.
(Muzzy indicates an average arrow speed gain for 4 - 7 feet per second is common and they have seen one bow that gained a whooping 13 feet per second)

Next lets see how many shots it takes me to get a good hole through a piece of paper. Well, it took only 7 shots and the first 2 shots were to see how the arrows were flying. I had a high left tear so I moved the nock point on the string about 1/8 of an inch, then had to adjust the arrow rest slightly a couple of tries to remove the left tear. Sorry, but as of this writing, I haven't had the opportunity to shoot through the chronograph again, who knows, I may have picked up another foot or two per second.

Another interesting aspect of the Zero Effect is that you don't have to worry about an arrow falling off your rest. It just doesn't happen. The arrow is at rest on the riser shelf and stays there, thanks in part to the overdraw guard. This does require the a small application of mole skin to dampen the noise made when the arrow is in contact with the riser, but an easy fix. You can get mole skin anywhere and its inexpensive, but maybe Muzzy will include a bit of mole skin with the Zero Effect in the future. The arrow stays in place even when drawing the arrow at almost 90 degrees to the vertical, left or right. When you start the draw, the arrow slips down into its shooting notch and stays there.

For what its worth, I shot the Zero Effect in pouring down rain just to see if by chance it would have an effect on operation, but it didn't. Next I took a handful of good old Southern cotton field dust and gave the rest a good dusting, especially around the moving parts, but again, I really didn't notice any effect on it operation. One thing I thought of trying but did not check out is ~ how well will the Zero Effect perform in a freezing rain or under extreme cold conditions?

And I almost forgot, broadheads. I topped off my shafts with 3 different 100 grain, fixed bladed broadheads to see how they would fly and how much adjustment would be necessary with my particular setup. As is usual for me with nearly every bow setup and configuration I have owned, the fixed blade heads flew slightly high and to the right, all 3 brands. Nothing a slight pin sight adjustment can quickly correct however.

Noticeable Noise

Vibration Noise: I did notice a slight increase in noise with the Zero Effect, very slight however. I kinda expected this considering the moving parts. I don't shoot with a stabilizer on this particular bow so I added one of the new noise suppressing stabilizers to see if this would help. The stabilizer seems to have put a damper on the rest generated vibration noise, at least as far as my ears can tell.

Draw Noise: If the arrow is drawn very slowly, the rest rises and makes contact with the arrow with no noticeable noise. But, if you draw quickly, there is a slight "click" when the contact between rest and arrow takes place. The "click" is not as noticeable with carbon shafts as with aluminum, but it is still there. The only solution to this I can come up with in a hunting situation will be to draw slowly, very slowly and this is the usual case anyway.

Bottom Line

Since switching to the Zero Effect, my shot groups have improved for sure. I like the Zero Effect well enough that I am planning on going to the Tennessee deer woods with it this Fall to see first hand how well it performs in an actual hunting situation.

At $109.99 retail, the Zero Effect is a bit on the "expensive side" for a hunting rest in my book until you look at what you get. It's more than just a rest, its an overdraw too and you get a quality roller side as well. If you are looking for a new rest or an improvement to your existing setup, the Zero Effect is definitely worth a look!

To see the Zero Effect rest in action, just click here for a short promotional video from Muzzy. You will need a copy of RealPlayer in order to view this video.

For more information, you can contact Muzzy via email at and be sure and tell them you saw them here on TnDeer.Com!


Dennis Goldsby
Publisher ~ TnDeer.Com

Special thanks to these fine folks:
Shelby Forest Archery Pro Shop for Technical Assistance.