take this for what it is worth, there are a couple of obvious flyers (387 and 391 due to cheap ammo) but you can see the groups change shape and move above and below the waterline. All shots taken were with the flag tails hanging. Ignore the MOA this was shot at 50 not 100. I'll fix it later
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Not bad at all! That said, there are a couple of things I do a little differently but you're all over it!
First off, I prefer 5 shot groups for rf and 3 shot groups for cf. With MY rf tuners, I find that it's very predictable that anti-nodes will appear at about 8-10 mark intervals. Anti-nodes are top and bottom of a sine wave and where you want to see small groups...that will hold up as well as possible. So, in order to encapsulate the full nodal cycle with MY tuner, moving MINE two marks at a time, I find that happens within about a full revolution (30 marks...2 at a time)..or 15 five shot groups moving the tuner 2 marks at a time...with MY tuner on a typical rfbr contour bbl. Skipping ahead here, your test looks like to me that you should move no more than 3 marks of YOUR tuner at a time on your rifle. I'd shoot more to confirm that unless you have already done that. I determine this by group shape and poi, as well as the predictability of the group shapes happening in succession. I'll post a pic of what I look for at the end. of my post and will explain in more detail as long as things can stay on track and as time allows. Bottom line here is that I'm literally looking for specific shapes at specific intervals AND specific POI. All combined, it's extremely significant statistically or I wouldn't be able to predict them! And it's on Jim's target!!
Second, I think you really need to carry the test out further to see ALL of what I look for but there's a lot in your target, as is.
Next, every tuner is a bit different and part of moving only 1 mark at a time until you know this is to establish a quantifiable value on the target for each adjustment increment of the tuner. To do that, you need to know what group shapes you're looking for and in what sequence they will happen. Great job! It's in your target although one is a little less clear than I'd like...but it's there. As I said above, looks to me like the groups I look for are happening at about 3 mark intervals on your gun and tuner.
Enough for now. Gotta work but give me a minute and I'll post an abbreviated target I just drew up to show the group shapes and intervals. Again, MY tuner may very well have different intervals than others. The test helps quantify that! I suggest running the full test, not this abbreviated one. Again, with my tuner, 15 five shot groups moving 2 numbers at a time. With a different tuner, you'll have to quantify the value of each mark first, looking for that straight vert group after a sweet spot at top or bottom.
