Update FWIW.
Went to the range ready to throw the whole rifle and scope in the lake! Give it to the Gators! I brought factory ammo from Winchester White Box, PMC Armscor and DRS remanufactured (but they use the Hornady bullet)
It turns out it is those crummy Winchester bullets. I loaded some of those and some Hornadys with the same brass (LC) and the same Powder AA 2230
Shot 5 rounds each, several times. Collected brass in between. It started getting hot, feels like summer here so I packed it in after 2 hours.
The Hornadys grouped at1 to 1-1/2. The Winchesters 2" with some fliers. Tested some factory ammo Win White Box was all over 2+ inches, PMC the same. Armscor did well at 1to 1-1/2.
The DRS re manufactured ammo which used the Hornady bullet was right in there with 1 to 1- 1/2 groups
The moral of the story is never change two things at the same time (bullets and powder) I saved enough ammo to test again in another rifle to verify.
I did not adjust the scope at all and just let them group were they would. Shooting at the Caldwell Orange Peel 4" targets 4 targets to a sheet. Just trying to keep them in that 4" circle.
I repeated the Hornady VS Winchester bullets several times and with several powder charges. The Hornady did better every time.
Next trip I am bring the longer barrel bolt action any maybe I can better results from that rifle to use up the Winchesters.