3" and? That makes your best group a shade over 1".
I'd try some of the other brands of ammo, even if they all are made by CCI.
My savage 93r17 shoots 3/4" groups consistently at 100 yards off the bench.
posted from my stupid smart phone, please excuse any spelling mistakes.
"If your plan is for one year, plant rice.
If your plan is for ten years, plant trees.
If your plan is for one hundred years,
educate children." -- Confucius