Thanks Rob. This is why your guns are always my recommendation to others. You put the time and effort into your products and being transparent about them. I know rollers would equal things out, but I’d be interested in seeing a video on that as well. I look forward to your carbon barrel test video. Take care.
Very informative. You should re rig the setup for rollers. Carbon. And the new timberline edition. Eliminating this barrel flex with technology will increase accuracy and the product. The more you know, well the more you know 😂 cheers
Should be cool to see the deflection of each barrel length, work out an equation and plot it on a graph and compare it to a graph of the deflection of the Carbon and the timberline.
I did mention this in the video but I will clarify. I always measure shooting range from the hand holding the gun. In this video, the "target" is set at 6m from where the start of the barrel is held in the clamping jig. This is roughly max effective range you will get with a 1,3m gun powered up. Most fish are not shot at max range so that difference will change significantly when shooting at normal range. I'd say the "normal" shots taken with a 1,3m gun will be at a distance of around 4m from the hand holding the gun.
It seemed like when rollers were becoming more popular many of the experienced guys were claiming they shot high, if I remember correctly. Could this be the reason? Ie they had learned to compensate by shooting low and the roller was actually a more true aiming point?
Very cool to see! My guess is Barrel flex ends up helping with accuracy at distance, as Coatsman mentioned you would need to compensate at that range to be accurate with a 120/130 conventional. Do you think shooting fish within 4m you we would need to compensate low for barrel flex or is to close it doesn’t matter? All that to say, my next gun will be a roller!
There are so many variables, hard to say. I very much doubt it will help. I have a strong belief the flex can allow the muzzle to chop down on the spear as it is exiting the muzzle just after pulling the trigger and releasing this tension in the barrel. The back is held by the hand so less downward "jump" this end of the barrel. If this is the case, it will create a wobble in the spear and slow it down. We need to do a lot more pool testing and filming to test for this.
very interesting, wonder what a single aluminum plate welded vertically into the tube on the inside would do, not saying its viable for large scale production but would be interesting to see if it would lend any additional support.
We have looked at just that long time back and then did the math calculations. If you take the same amount of material you would set inside as a vertical beam and added it to the wall thickness, it comes out to the same thing. This is because you are adding to the hoop strength. No problem getting a tube made like this, then just make a tool to cut the inner portion out.
So does this matter when you are looking down the barrel and it’s loaded? Don’t you see the deflection when you look down the barrel and accordingly adjust for it in the shot?
![Chris Langan - The Interview THEY Didn't Want You To See - CTMU [Full Version; Timestamps]](/img/n.gif)
You are welcome 👍
Great
Thanks Rob. This is why your guns are always my recommendation to others. You put the time and effort into your products and being transparent about them.
I know rollers would equal things out, but I’d be interested in seeing a video on that as well.
I look forward to your carbon barrel test video. Take care.
Next week 😁👍
Bravo!! Thank you!!!
You are welcome.
Very informative. You should re rig the setup for rollers. Carbon. And the new timberline edition. Eliminating this barrel flex with technology will increase accuracy and the product. The more you know, well the more you know 😂 cheers
The plan is to show our same profile carbon next. It is already in the machine. We will then do the Timberline and a roller.
Really interesting. Thanks, Rob
You are welcome 👍
Should be cool to see the deflection of each barrel length, work out an equation and plot it on a graph and compare it to a graph of the deflection of the Carbon and the timberline.
That would be a lot of work, will consider it after doing the other barrel types.
Hi Rob fantastic info. Q. What was the distance to the ruler in this test from the front of the speargun muzzle?
I did mention this in the video but I will clarify. I always measure shooting range from the hand holding the gun. In this video, the "target" is set at 6m from where the start of the barrel is held in the clamping jig. This is roughly max effective range you will get with a 1,3m gun powered up. Most fish are not shot at max range so that difference will change significantly when shooting at normal range. I'd say the "normal" shots taken with a 1,3m gun will be at a distance of around 4m from the hand holding the gun.
It seemed like when rollers were becoming more popular many of the experienced guys were claiming they shot high, if I remember correctly. Could this be the reason? Ie they had learned to compensate by shooting low and the roller was actually a more true aiming point?
Very likely 👍
Very cool to see! My guess is Barrel flex ends up helping with accuracy at distance, as Coatsman mentioned you would need to compensate at that range to be accurate with a 120/130 conventional. Do you think shooting fish within 4m you we would need to compensate low for barrel flex or is to close it doesn’t matter? All that to say, my next gun will be a roller!
There are so many variables, hard to say. I very much doubt it will help. I have a strong belief the flex can allow the muzzle to chop down on the spear as it is exiting the muzzle just after pulling the trigger and releasing this tension in the barrel. The back is held by the hand so less downward "jump" this end of the barrel. If this is the case, it will create a wobble in the spear and slow it down. We need to do a lot more pool testing and filming to test for this.
very interesting, wonder what a single aluminum plate welded vertically into the tube on the inside would do, not saying its viable for large scale production but would be interesting to see if it would lend any additional support.
We have looked at just that long time back and then did the math calculations. If you take the same amount of material you would set inside as a vertical beam and added it to the wall thickness, it comes out to the same thing. This is because you are adding to the hoop strength. No problem getting a tube made like this, then just make a tool to cut the inner portion out.
what lengths of rubber do you run for different length barrels?
There are so many variables, too many to list here. You can find them on our website.
So does this matter when you are looking down the barrel and it’s loaded? Don’t you see the deflection when you look down the barrel and accordingly adjust for it in the shot?
You will not see the deflection. The gun will shoot fine but, it will most probably cause spear wobble which will affect the accuracy, if powered up.
Havent had a clue its this much flex... I use shorter guns, but this is an awesome test, thanks Rob 🫡