Skout Indexing Your Barrel?

[DevilsLuck]

So before too long, and once the holiday ruckus is over; I'll begin setting up my new EVO. One of the features this gun has, that my other PCPs does not, is the easy barrel indexing feature. Now the question becomes "how to make proper use of it"?
Should one just center their scope, then indexing the barrels POI to closest point of natural center of the scope, and adjust the scope from there? Or, is there more to it?

 

[Skout-airguns]

Check out this video we made here describing the process and reasoning to index the barrel! If you have any other questions please let us know! Have a happy thanksgiving!

 

[DevilsLuck]

Check out this video we made here describing the process and reasoning to index the barrel! If you have any other questions please let us know! Have a happy thanksgiving!

Will do. Thanks!

 

[Vana2]

Here's an article on barrel indexing that you might like...

In Pursuit of Sub-MOA – Barrel Indexing | Blog | Pyramyd AIR

This is a guest blog from reader Vana2, whose real name is Hank. Today he tells us how to index a barrel to get the pellets centered on the vertical line.

www.pyramydair.com

 

[manabeknives]

Will do. Thanks!

how did the indexing go?

 

[DevilsLuck]

how did the indexing go?

I haven't messed with it yet. Holiday madness has me otherwise preoccupied for the moment.

 

[Dewy]

Here are results from indexing my barrel on my EVO. This was done at 50 yards. The gun is roughly tuned but I wanted to play around with indexing. From the results you can see that 9 is where I want to be so I tweaked it a bit to get it perfectly at 12 o’clock. Very easy to do with the Skout.

 

[steve123]

Thanks for showing your results.

If you would please do so, shoot some group"s" at 50Y at setting 3 and at setting 9 because it seemed 3 was more precise. I'm just curious as 3 through 6 are more precise as well. Also opposite of that - 10 to 1 going clockwise seem less precise.

All that is to say I'd rather be clocked away from 9 if I can get twice the precision. The problem is it takes quite a bit of trial and error shooting groups in calm conditions to make a fruitful decision.

 

[Motorhead]

While setting up a fixed barrel PCP I have always clocked any barrel run out to 12:00 prior to doing the transfer path hole, On floating rotation barrels I'll do similar, but once @ 12:00 clocked for any run out I seldom chase it any further.
Fine tune the mounts to get scope sorta in the center of adjustment range and go shoot it !!!

I'm neurotic without a doubt, but not so much at this location

 

[Dewy]

Thanks for showing your results.

If you would please do so, shoot some group"s" at 50Y at setting 3 and at setting 9 because it seemed 3 was more precise. I'm just curious as 3 through 6 are more precise as well. Also opposite of that - 10 to 1 going clockwise seem less precise.

All that is to say I'd rather be clocked away from 9 if I can get twice the precision. The problem is it takes quite a bit of trial and error shooting groups in calm conditions to make a fruitful decision.

These were shot indoors at 50 yards. From my understanding you want your barrel at the top of the indexing. Don’t take the group size into consideration as I was limited at my time on the bench and was shooting fairly quickly to get through all 12 positions. I Thought it was interesting that the circle was that large at 50 yards.

 

[bigHUN]

Not a barrel but a FX liner indexing...
I set the scope to a mechanical center L-R;
Clamp the gun in a mechanical rest, in my case it is a one-piece-rest;
Shoot at distance longer then 50 M, but a 100 M would be best.
Shoot 5 shot groups;
Index by 15 minutes;
In my case some liners project fairly large radius and some liners project much smaller radius., with a group pattern rotating and changing.
I chose the group that is closest to the scope mechanical center.
Index more in 5 minutes increments CW-CCW to fine tune.
In my case, my liners produce best group patterns with closer to scope center in between 1 a clock and 2 a clock.
Also, when all done, shockingly my 1:27 liner plots the biggest radius on 100 M paper (more then a foot radius), meaning to me it is fairly bent. But that liner is my most precise and accurate for scoring 100 M rings.
I have not seen relation between how "bent" is a liner vs how accurate/precise it is.

 

[steve123]

Yeah this is interesting stuff.

One time in particular I tuned my Thomas HPX for the lowest ES I could but guess what happened - it lost precision by about half at 50y.

I had to start over again and fiddled with it until the precision came back again to a previous level. The ES was decent but not as tight as it was at its highest.

Also I think all these metrics must be balanced together for optimal results.
That might or might not be clocking at TDC or lowest ES, or, or, or...

I used to ladder test my long range centerfires at 330y by adjusting powder weight. Sometimes I'd get 2 or 3 shots touching or close to it, however not all the time was the optimal load the most precise at 100y, but the load was very good/good enough at any distance. Was it the lowest ES, no.
Was it the most precise at 100y, no, but this load was a winner because it was consistently good in all aspects, or in other words the best compromise.