Help improving my group’s. What needs changing?

[Rickyd1]

I’m working up a load for my 6.5 creedmoor AT-X. I have really good extreme spread of 6.8fps and standard deviation of 2.9fps. Im also happy with the velocity of 2772fps I’m now altering the seating depth - I have a range of depths already tested, but ideally I’d like them tighter. I started off with 25 thou off jam, then worked my way back. I have gone from 2.3280 down to 2.2720. Do I need to still keep going with the seating depth?
I have a barrel tuner that I haven’t yet touched, as ideally I wanted tighter groups first, or would you be happy with the results and start adjusting the tuner ?

 

[Bacarrat]

I would do a finer seating depth adjustment. .030 though is a lot between adjustments. Some people go as low as .003 to .010 adjustments. Find the 3 groups that are close in size and pick the longest one.

 

[MvHTjy]

5 shots is way too small to get an accurate representation of what your true ES/SD is (unless you already confirmed this over a larger sample size). If you haven't already, I highly recommend you review this Hornady podcast:

The only thing you can glean from 3 shot groups is immediately identifying bad ones. I would set a desired threshold...say 1/3 moa (if that's even possible), throw out the shots above that, and keep gathering data for the potentially good ones. Rinse and repeat.

 

[Rickyd1]

Sorry, my first post wasn’t very clear- yes adjustments are .003
Also I have done a 20 shot string prior to this, the the results being very very similar- just slightly higher.
And yes I do plan on doing larger groups than three shots, it’s just that I wasn’t too happy with the results I currently have, so don’t want to waste more bullets

 

[oldnewguy]

What kind of results are you hoping for?