So after 400-500 rounds (100 of it was fireforming), I could just not get one of the 6 dasher barrels to shoot the way it needs to shoot in order to win matches. It shoots ok for my friends and they would never know the difference. It shoots a 1/4" group sometimes, but over time it will open up to about a 3/8" or slightly bigger group on multiple 3-5 shot strings. As a result, I decided to make this into a fireforming barrel and to give to friends when we go out on shoots and they want to use my dasher.
I then decided to break in the other barrel I had chambered up. Took it to the range and did a little more rigorous break in process: 1-clean-2-clean-3-clean-3-clean. After this, it started to shoot a "standard" 33gr Varget load into around a 3/8" round group, so I decided to start the load development process. I had rounds from 32.8-33.8gr Varget, loaded about 5K out. I have a .155 FB by the way. I am using 105 hybrids, CCI450 primers.
As I worked up to 33.4, the groups started to tighten. 33.4-33.6gr produced a similar POA/POI shift and producing high 2's for 3-shot groups. After 33.6, the groups also started to open just slightly, but most importantly the POI was changing slightly so that indicated to me that I was moving out of the node. I went home and loaded up 33.4, 33.5, and 33.6 grains @ 5K out and cleaned the barrel well and went back out in the afternoon. Groups shot even better @ just around the 2's for all three powder charges (I didn't measure them but they were good). I chronographed the 33.5gr load that I used for foulers and was getting 3011 fps (right in the sweet spot) and 15 ES for 3 shots. Decided this was the node and went home, cleaned the barrel again and loaded up some rounds @ 33.5 gr with different seating depths.
The next weekend I went and shot some foulers and then started to shoot for groups. 5K out was good, but as I approached 10K out, the groups shrunk into the high 1's. I thought to myself...GREAT!!!!! Shot the rest of the loads and noticed that the seating depth range it would like is around 8-10K out. Again, went home and ate lunch, and did not clean the barrel, having only shot about 15-20 rounds in the AM. I loaded 15 rounds at 33.5gr Varget, seated 8K out. Shot 3 foulers, which both went into one hole and then shot a 3 shot and 4 shot group. The results are below at the red dots. Thought to myself, I got the load down! I chronographed 5 shots and ES was around 14 ES. Not bad!
The next day, I decided to stretch its legs as far as I could at my local range, which is only 200 yards. Loaded up the same loads and with a clean barrel, shot some foulers to get my 200 zero and then shot a 5 shot group. This was the first group shot at 200 yards (in white). If I remember correctly, it was a .57" edge-to-edge group, meaning a .15 MOA group. :

I chronographed 3 more shots after shooting a couple more similar, but slightly bigger (.22 MOA and .27 MOA, 5-shot groups), and I was now getting 3058 fps with 13ES. My barrel was sped up from the last time I went out. Hopefully thats the end of the speeding up. In 50-60 rounds, I had a load developed and am ready for the 2016 mid-range shooting season!