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Ray Rowden
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Discussion Starter · #1 ·
@Ibojoe and I were talking about light bandsets for shooting butterfly. Then, BOOM an envelope hit my mailbox, and it turned out to be stuffed with clearly labeled, butterfly length samples of latex.

Since I had no experience with most of these compounds, it seemed right to run them over the chrony.

I set up the chronograph in the basement (to avoid wild temperature swings). I cut all the samples for 11-¼ inches of active length and ½ to ¼-inch tapers, used identical microfiber pouches, and shot them all using the SS Beanflip frame. The Ocularis attachment is hard to beat for quick and reliable band changes!

Wood Rectangle Line Font Art


It is significant that these setup are intended for butterfly shooting. You won't get these results with ½ to ¼ inch tapers if the active length is reduced to 5-½ inches. If you reduce the active length to half, you might pick up the performance by doubling the cut (double the bands or cut 1-inch to ½-inch tapers) but the draw weights will double.

Results:

.45mm Pink Sumeike 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 2.42 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 286.5 245.9 199.7 134.3 216.6

.50mm Precise 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 4.4 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 312.2 268.2 223.8 148.8 238.25

1/32 Gum Rubber(11-1/4 tapered 1/2-1/4 Maxed at 48 inches)

Average Draw weight - 13.2 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 271.7 261.5 223.1 159.4 228.925

TBG 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 2.4 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 262.8 230.7 192 128.4 203.475

GZK .72 White 11-1/4 tapered 1/2-1/4 drawn to 58 inches

Average Draw weight - 6.6 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 283.1 266.5 237.1 173.6 240.075

.72 Precise 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 5.7 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 297.7 272.0 237.9 165 243.15

.72 GZK Orange 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 6.6 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 305.7 282.3 252.1 178.4 254.625

.040 Latex 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 6.1 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 308.5 290.7 252.6 179.7 257.875

Takeaways:



  1. The thin bands (.45 and .50mm performed way better than I expected.


  2. Draw weight does not predict performance (not new news, but good confirmation).


  3. The gum rubber does not act like latex. All the latex stretched to 500 percent, the gum rubber felt like hitting a wall at about 400 percent. Yet, the performance was very good - especially with the ½-inch steel. I was sure losing 20 percent of the draw would hurt it more.


  4. I guess the other amazing thing for me, was how much speed was generated by 1/2-inch to 1/4 tapers! I picked that cut because it's easy to line up on a cutting mat, and it's been working for me recently with .040 latex. I really expected the thin stuff to have trouble launching 1/2-inch steel. Not so much!

Finally, another big thank you to Ibojoe for the generous donation of material and consulting while I worked my way through the process!
 

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Many thanks for posting!!! I had a tip that it was coming and have been checking a couple of times a day for this! As you know, numbers are part of my fun.

My thoughts:

- The .45mm Sumeike is perfect for competition with 1/4" steel. Almost no draw weight at all.

- The .50mm Precise is amazing with the 1/4" and 5/16" ammo and draw weight is still very light.

- Gum rubber is too heavy a draw for my liking these days.

- The TBG performed way better than I expected. Draw weight was the lowest of the lot. Cutting a 4-5 pound draw would likely give very sweet numbers.

- The .GZK .72 White seems to be obsolete with the Orange version performing better with the same draw weight.

- The Precise .72 compares well to the GZK .72 Orange considering it's almost a pound less draw weight. I wonder if the current production .70mm or .75mm Precise is similar.

- The .040 latex was a shocker! It's every bit as fast (or faster) as the .72 GZK Orange but half pound less draw weight.

Questions:

- Was the GZK .72 Orange an "anti-freeze" band?

- If you have extra material I would very much like to see a comparison of the .50mm Precise, .72 GZK Orange and the .040" Latex with a medium draw length such as 32" and a cut of maybe 7/8" x 5/8" x 7" or even 3/4" x 1/2" x 7".
 

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@Ibojoe and I were talking about light bandsets for shooting butterfly. Then, BOOM an envelope hit my mailbox, and it turned out to be stuffed with clearly labeled, butterfly length samples of latex.

Since I had no experience with most of these compounds, it seemed right to run them over the chrony.

I set up the chronograph in the basement (to avoid wild temperature swings). I cut all the samples for 11-¼ inches of active length and ½ to ¼-inch tapers, used identical microfiber pouches, and shot them all using the SS Beanflip frame. The Ocularis attachment is hard to beat for quick and reliable band changes!

attachicon.gif
8bandsets.JPG

It is significant that these setup are intended for butterfly shooting. You won't get these results with ½ to ¼ inch tapers if the active length is reduced to 5-½ inches. If you reduce the active length to half, you might pick up the performance by doubling the cut (double the bands or cut 1-inch to ½-inch tapers) but the draw weights will double.

Results:

.45mm Pink Sumeike 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 2.42 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 286.5 245.9 199.7 134.3 216.6

.50mm Precise 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 4.4 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 312.2 268.2 223.8 148.8 238.25

1/32 Gum Rubber(11-1/4 tapered 1/2-1/4 Maxed at 48 inches)

Average Draw weight - 13.2 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 271.7 261.5 223.1 159.4 228.925

TBG 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 2.4 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 262.8 230.7 192 128.4 203.475

GZK .72 White 11-1/4 tapered 1/2-1/4 drawn to 58 inches

Average Draw weight - 6.6 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 283.1 266.5 237.1 173.6 240.075

.72 Precise 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 5.7 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 297.7 272.0 237.9 165 243.15

.72 GZK Orange 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 6.6 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 305.7 282.3 252.1 178.4 254.625

.040 Latex 11-1/4" tapered 1/2-1/4 drawn to 58"

Average Draw weight - 6.1 pounds

Ammo 1/4 5/16 3/8 1/2 Ave of Ave

FPS Ave 308.5 290.7 252.6 179.7 257.875

Takeaways:



  1. The thin bands (.45 and .50mm performed way better than I expected.


  2. Draw weight does not predict performance (not new news, but good confirmation).


  3. The gum rubber does not act like latex. All the latex stretched to 500 percent, the gum rubber felt like hitting a wall at about 400 percent. Yet, the performance was very good - especially with the ½-inch steel. I was sure losing 20 percent of the draw would hurt it more.


  4. I guess the other amazing thing for me, was how much speed was generated by 1/2-inch to 1/4 tapers! I picked that cut because it's easy to line up on a cutting mat, and it's been working for me recently with .040 latex. I really expected the thin stuff to have trouble launching 1/2-inch steel. Not so much!

Finally, another big thank you to Ibojoe for the generous donation of material and consulting while I worked my way through the process!
Like those speeds 1/2 inch is all I shoot glass and steel the last time I checked speeds was 2 years ago was averaging 223 ft. per second drawn to just past ear with tubes but can tell we have gone much beyond that mark need to check again when I get a machine!!
 

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Ray Rowden
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2,651 Posts
Discussion Starter · #5 ·
Glad you liked the post!

I'm not crazy about shooting over the chrony, but this was too good an opportunity to pass up.

I don't have a good answer on the GZK Orange, but I know his current website indicates the .72 Orange he's selling is anti-freeze.

It may be a while before I get the chrony out again. I've got to focus on my shooting in advance of the Southeast Slingshot Tournament coming up at the end of the month! Somebody has to make Bill Hays, Nathan Masters, Dan Ambrosius, RayShot, Beanflip and Daranda Hays and You'llShootYerEyeOut work for those trophies!

Many thanks for posting!!! I had a tip that it was coming and have been checking a couple of times a day for this! As you know, numbers are part of my fun.

My thoughts:

- The .45mm Sumeike is perfect for competition with 1/4" steel. Almost no draw weight at all.

- The .50mm Precise is amazing with the 1/4" and 5/16" ammo and draw weight is still very light.

- Gum rubber is too heavy a draw for my liking these days.

- The TBG performed way better than I expected. Draw weight was the lowest of the lot. Cutting a 4-5 pound draw would likely give very sweet numbers.

- The .GZK .72 White seems to be obsolete with the Orange version performing better with the same draw weight.

- The Precise .72 compares well to the GZK .72 Orange considering it's almost a pound less draw weight. I wonder if the current production .70mm or .75mm Precise is similar.

- The .040 latex was a shocker! It's every bit as fast (or faster) as the .72 GZK Orange but half pound less draw weight.

Questions:

- Was the GZK .72 Orange an "anti-freeze" band?

- If you have extra material I would very much like to see a comparison of the .50mm Precise, .72 GZK Orange and the .040" Latex with a medium draw length such as 32" and a cut of maybe 7/8" x 5/8" x 7" or even 3/4" x 1/2" x 7".
 

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It may be a while before I get the chrony out again. I've got to focus on my shooting in advance of the Southeast Slingshot Tournament coming up at the end of the month! Somebody has to make Bill Hays, Nathan Masters, Dan Ambrosius, RayShot, Beanflip and Daranda Hays and You'llShootYerEyeOut work for those trophies!

You go for it Ray. Give them a run for their money. :thumbsup: :) Wish I could drive down to see it.
 

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Holy guacamole and salsa, Kawkan! That is golden stuff to share. I gotta get some GZK orange! I still won't have 58" draw length... or the ability to shoot butterfly... but I will have some rubber to stretch! Wooo! 283 fps. Just crazy times to be alive.

BSDave, maybe next year you drive to Cookeville and I will drive the rest. This year is bust for me. I was looking forward to meeting some SSF... Bill, Ray, Nathan, etc... get some campfire shenanigans for my collection. But family obligations and such. Horse Pens 40 sounds pretty cool, too. I know a crazy Russian-American down that way that would love to camp out. He would not even know what to think about a bunch of slingers.
 

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Like those speeds 1/2 inch is all I shoot glass and steel the last time I checked speeds was 2 years ago was averaging 223 ft. per second drawn to just past ear with tubes but can tell we have gone much beyond that mark need to check again when I get a machine!![/quote]

Water Snake 2, that is my style of shooting except 5/16" steel and marbles sometimes. I doubt I am getting 223 fps. May not even be above 200. Short arms...
 

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You did good buddy. I had a feeling about it, just no proof. You have confirmed my suspicions.
While you were doing this I started testing longevity between my two favorites, Sumeike .45 and the precise .50. I like the speeds of the precise but it's not holding up well. I've gone through three sets of precise while still on the original set of Sumeike. The stuff really lasts. Everyday I think, this is the day they will break but they just keep shootn. Thanks my friend
 

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KawKan,

Thanks for taking the time to chrony those band sets! I've been meaning to dust off my chrony (where ever it is) and do the same. Appreciate you testing the Pink Sumeike, I plan on adding it to a future order.
 

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BSDave, maybe next year you drive to Cookeville and I will drive the rest. This year is bust for me. I was looking forward to meeting some SSF... Bill, Ray, Nathan, etc... get some campfire shenanigans for my collection. But family obligations and such. Horse Pens 40 sounds pretty cool, too. I know a crazy Russian-American down that way that would love to camp out. He would not even know what to think about a bunch of slingers.
Or we will meet at Alverton next June. It will happen sooner or later. I'm sure of it.
 
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You know I have been messing with tubes lately and this shows me that I clearly have to stop thinking of TBG as the go to flatband. I did try some SS black but it's obvious I need to look a little farther. It's interesting as heck figureing out band thickness and length and ammo size for the best shooting you can get. Ray, Joe, this is great info, thanks,
 
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