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I love the idea of a lighted nock, but I haven’t found one that’s perfect. The main issues with most of them are: they fit my string differently than standard nocks, they can be unreliable, and they are significantly heavier than a standard nock.
This fall, I hunted with Levi Morgan, the best 3D archer of all time, and we discussed those nock pain points. He recommended a nock he was happy with, and it’s shockingly affordable. I’ve been testing it and, not surprisingly, he was right.
Scott Einsmann
Specs
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Weight:
18.4 grains (measured) -
Battery Life:
More than 24 hours -
Price:
$19 for a six pack -
Switch to turn the nock off -
Sizes for .165, .204, .233, .244, .246 inside diameters -
Good fit on a 0.110-inch serving diameter
The nock Morgan recommended is made by an Amazon brand that I wouldn’t have given a second look. But when someone like Morgan makes a gear recommendation, I listen. I ordered the universal-fit nock and one made specifically for a .204-diameter shaft. The .204s were too big for my Easton 5.0s, but the universal option with the proper adapter fit perfectly. Tip: If you find the nock fit is too loose, use some Teflon tape to take up the space.
CosiComu Compared to a Nockturnal and an Easton Microlite
My Easton 5.0 shafts come with Microlite nocks, and that’s what I used while tuning and getting my bow sighted in. So I want a lighted nock that closely matches that nock in how it fits inside my d-loop, clips onto the string, and overall weight.
Weight Compared
- Easton Microlite: 8 grains
- CosiComu: 18.4 grains
- Nockturnal: 25.6 grains
The CosiComu is 10 grains heavier than the Microlite, and a Nockturnal Shift is 17 grains heavier. I did an experiment earlier this year to see what affects arrow speed. In that, I found you lose 1 fps for every 3 grains added. If you want to know at what point speed loss translates into a difference in trajectory, you’ll have to watch the full video.
Nock Fit Compared
The main reason I chose the CosiComu this season over other lighted nocks is the fit. It matches my Easton Micolite Nock fit almost identically. Both nocks snap onto the string and release with light pressure. They also require the same distance between my nocking points to avoid a pinch. The result is that I can jump between lighted nocks and standard nocks with no noticeable difference.
Why Nock Fit Matters
Why does nock fit and nock pinch matter? I interviewed Morgan this summer, and we discussed what actually matters for accuracy. One of the main topics we discussed was nock fit and nock pinch, which can cause wild broadhead flight and tuning issues.
When you have a good nock fit your nocks should click onto your string and come off the string with a light pull. If it takes force to pull the nock off the string, you can get unexplained tuning issues or poor groups. As you draw your bow, the string can pinch the nock and you’ll see the arrow lift off the rest if that’s the case. That’s why the spacing between your d-loop knots or nocking points shouldn’t be too tight.
Testing the CosiComu in the Field and on the Range
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The bright green lighted nock was easy to find. -
The lighted nock helped the author find the blood trail that led to his deer. -
I did a lot of backyard shooting with the CosiComu before taking them hunting and they consistently illuminated and easily switched off without a tool. I was happy with their brightness as well.
I shot a buck at 15 yards this fall. It was a slight quartering-to shot, which meant I had to hug the shoulder with my pin to get a favorable exit location. The shot felt good, I saw the green nock disappear right where I was aiming, and I heard a crash a few seconds later.
However, two weeks earlier, I misjudged a deer and hit it square in the shoulder blade and got almost no penetration. That seeded plenty of doubt as I waited to climb down this buck later in the season. I went to where I thought the deer had been standing at the shot, but didn’t find any blood or the arrow. I would normally do a grid search to find first blood, but as the deer ran off into a thick cut over, I thought I saw a flash of my green lighted nock.
I walked to where I saw that green flash and quickly found my arrow soaked in good blood from point to nock. I figured the flash of green I saw was the arrow working its way out the exit wound. Next to the arrow was an insane blood trail that led right to my deer. I backtracked and found that where I initially was looking for blood was only about five yards off.
The UpShot
Sure, I would have found that deer without the lighted nock, but seeing where I hit and quickly finding the arrow certainly made my day easier. That’s why I’ll always use lighted nocks where they’re legal. The key is finding a nock that closely matches your standard nocks and has a proper string fit. The CosiComu is a surprisingly effective solution.
Read the full article here
