I found a bunch of new, unfired .44 brass in my box so decided to do a test and sort brass. I shot 50 yd's and any that went high or low were put in different piles. I didn't realize the high hits were making two separate groups and put them in the same lot. Anyway I had four separate groups. A nice group high, one a little lower, one centered and another just a little low right.
I used my 330 gr WLNGC boolit with 21 gr's of 296, Fed. 150 primer.
The first five were in way less then 1/2" and the center group just got larger until 30 rounds were in 1-1/4".
The low right group was three touching to start and went to 7/8".
Now I have to cast more boolits and see if the brass that hit high, etc, continues to hit the same place.
The gun is a SBH with almost 58,000 rounds through it.
I will also reload the 30 rounds to see if they stay centered.
But 30 rounds through 1-1/4" at 50 yd's is super any way you look at it.
I will post after more work.