Although you might consider trying several brands and bullet weights in your rifle you will probably find that today's factory ammo shoots well regardless of brand. I have a similar rifle that I take out occassionally and it works well with anything I run through it. Bullet choice is usually 150 or 170 semi-flat points and they make the little rifle kick pretty good. My rifle shoots Federal and Winchester ammo about equally, I usually just buy the cheapest I can find and do not worry about splitting hairs. Not sure if you are using factory open sights, that what I do so my accuracy range is about 150-200 yards or so. If your eyes are good you could shoot accurately farther than that. I shoot at big rocks out to four or five hundred yards with the little rifle, lots of holdover and guesswork but I get hits. I watch the gunshows for ammo, more interested in $ than who made it.