It's about the torque vs speed... At the thick end the band pulls hard but slower, which is great for starting the ammo moving. The further toward the thin end, the faster the band is contracting but with less force and that's great for accelerating. Think about car gears, you start in a low gear to get the car moving and as you go faster you use higher (faster but less torquey) gears. A car that is either stuck in 1st or 5th gear isn't going to win a drag race. Similarly a straight band is pushing slower as it contracts but a tapered one can keep applying (at least some) extra force because it is not contracting evenly over the length, which means the ammo is correctly "powered" torque wise for a more of it's journey beween the pouch and forks.

I'm really trying to learn the science behind bands and your videos are awesome for this. Great job with this one.

thanks for putting in all that work for us. great video, very informative.

Really enjoyed this video! A lot of awesome info! Thanks for breaking things down! 👊💥

Extremely informative vid👍... once again thanks for taking the time to share your findings.

I could see what someone would say the test might be inaccurate but you did the best you had with the tools available. All in all good video and informational idk what’s not to like good job there brother and thanx for the effort in the info I will carry this along. 👍🏼 well done

As a beginner this is by far the best channel 👍🏴󠁧󠁢󠁥󠁮󠁧󠁿

Here is my theory on the results of the different tapers:

I specially came back to check this video. I am using a taper of 25-15 and 20-12. I am experiencing early breakage of my bands at the pouch ends.

Interesting results for sure.👍🏻

You saved us all alot of work Sir!!!!! Awesome vid......

This is an awesome video, super informative!

Awesome video! Love the way you do science

Man I am REALLY liking your channel & your great content & of course I thank you for it. I just recently got back to using slingshots as I am now retired and enjoying my "2nd childhood"!!! I also have gotten into archery and to put those speeds in a comparable perspective...a 45lb draw weight bow & a 300gr. arrow gives you somewhere between 160

I'd like to see 3/8" vs 7/16" (9.5 mm vs 11.1 mm) steel for speed with band sets made from Theraband Gold and GZK Green .80 mm with tapers of 30-20 and 25-20 and whatever else you would like to throw in the tests. Your videos are very useful and an excellent source of real stats -the numbers don't lie. I appreciate how you keep the same type of draw and max out the bands on each test, always factoring in the active length, as it eliminating some of the variables. I just watched a dude test a bunch of bands, anchoring to the side of his mouth, and then to make his point on his favored bandset, he switched to longer bands and a half butterfly draw, which invalidated his comparison. Thank you for NOT doing silly stuff like that and your straight forward presentation!

Excellent Video cheers An Arcane subject for most but highly informative for the rest of us Funnily enough i was having similar problems with Bands Snapping after a few shots ..Sometimes as few as 20 ! ..always near the pouch and with both GZK Black And Snipersling ( which i prefer to GZK) i use both .7 and. 8 with 3/8 Steel..Think maybe im using too much Elastic !..But saying that I get some Excellent Power straight through a Baked Beans tin at 20 yds comfortably ( when i hit it!) I was cutting them at 35 tapered to 25 mm over about 7 inch active Band length ..Folding the wide end in on itself im sure im getting plus 200 ft per second But ..Interesting and food for thought!

Useful knowledge. Thank you.

great info on the bandsets , very interesting

Kilker shooting, reviews and also detailed analysis of the more scientific side of things... Slingshot fans who haven't found your channel are sleeping! Good stuff as always

That really explains a lot, very interesting video.