Update
I made it back out to the range to try and work on the hang fire issue and do some retesting. I loaded up 3 rounds with 4895 with 1 gr of dacron filler. I actually weighed the dacron and 1 gr is a big tuft of the stuff. I set up my target at 100 yards and got settled in. There was no hang fire at all and I was impressed with the 3 shot group.
I split the 1 gr tuft and it looked kind of elongated. The 3 shot group was still very nice. The one flyer was a slight hang fire. Not as bad as last time but it did throw me off.
I tinkered around with the tuft size and there is definitely a tipping point between too little and just right. I got to the point when I could eyeball the tuft for the correct size fairly well. This was my last 3 shot group at 100 yards.
I put another target up at 200 yards and held dead center with my 100 yard zero. I say 100 yard zero but in reality the 20 MOA scope base had me hitting 2" high at 100 yards and I could not correct any drop as my elevation was maxed out for hitting lower. Anyway I held dead on at 200 and was about 6 moa low. I adjusted and fired again. I was good on elevation but I had to adjust 6 moa left to get on the paper. Once I got dialed in I held close to a 2 moa group at 200 yards.
I didn't have a target stand at 300 yards so I shot at the 12" x 16" steel. I adjusted 12 moa from my 100 yard zero and rang the steel with consistency.
Next up was the 400 yard target. It is slightly larger but not by a lot. If I hit it I knew I was really on to something. Here is where I goofed. I made an adjustment but wrote the wrong data. I'm showing 12 moa for 300 and 400 yards. Whatever I was doing was working because I was making that sucker clang.
Oh boy I thought. Here comes the biggie. 500 yards. 21 moa and 7 moa left, Clang! I didn't hit it every time but I did hit it 3 out of 5 times.
So now I have hit the steel all the way out to 500 yards with regularity. Enough to know I am onto something good. I settle in and try for the 600 yard gong. This is the target that was the original goal for me to hit with this boolit/rifle combo. Sad to say but I didn't hit it. The berm was grassed up and I couldn't see where the bullet was splashing so I really had no idea what to adjust. It is safe for now because it it time to go fishing but next week it had better watch out. I know I have that 600 yard target concerned now.