I must apologize I was talking about hand loading. Off the shelf ammo is a little different, but not different. I would try the premium bullet choices first. There is a reason you pay more for them. Better bullets and more care in construction. Like Remington premier series for instance. But again, what works in one rifle will not work in another. The Winchester White Box 45 grain bullets worked well in lot of Handi Rifles, but the supply has dried up. Some have gotten good results with the Black Hills ammo. They make different grades and again they make a premium line that features top of the line bullets. Just stick with domestic manufacturers for the better results. I think that you could get good results from Federal, Winchester, Hornady, Remington, Black Hills for instance. Buy one box of each and do some experimenting at the range to find which your gun likes the best. If you want cheap, try the re-manufactured Black Hills or Remington UMC brand. If you could get your hands on the Winchester 45 grain USA JHP (Winchester White box), they may do well and they are of reasonable cost. I would try 55 grain bullets and under. 60 grain bullets may or may not stabilize in your 1 - 12" twist. Do not be afraid to try 40 grain bullets. The important point is accuracy not bullet weight.