If you need top accuracy, one of your choices to try must be SK Jagd Match. It is sold here under that name and under the Wolf Match Extra brand.
Usually you do not find them at local sporting goods stores and have to order from smallbore rifle competition retailers like Champion's Choice or Champion Shooters Supply or online ammo houses like Midway and Graf's.
That stuff is more expensive than your bulk packs but if you need accuracy and your gun like it, it will deliver.
This is what my aperture sighted Anschutz 1411 prone target rifle can do with Wolf Match Extra at 50 yards from a prone position supported only by a shooting coat and a sling: