Seating depth nodes

[moe africa]

Moe, your groups are much smaller than 3x3. The small square are .5 inch. Your groups are actually at the 1.5” accuracy guarantee of sone very good, and expensive factory rifles. But those 142’s, a go-to in the early days of Fclass, could easily all touch or overlap on a .284 case (+ ~5 grains)) with a fast twist barrel and a heavy gun, which is the reason for the question.

The 2.211 group is 0.7"
The 2.220 group is 0.6"
The picture attached is a 5 shot group at a cbto of 2.202"

 

[Dave M.]

Im not the greatest shot out there , but 3 x 3 groups are a waste of components IMO

I think you just answered your question there Moe. The true problem seems to be that your groups don’t show any meaningful trend (no offense intended) and trying to select a group from these target pictures is like pulling a rabbit from a hat. I suspect these groups were not shot off a good front or rear rest, correct? I’d also wager that whichever group you select that based on the first test, you’d be hard pressed to arrive at the same conclusion if you repeated the original test. Being able to consistently repeat your test results and arrive at the same conclusion or recommendation is the essence of ALL scientific testing.
Dave