Well, I tried all the fancy ammo was and wasn't impressed. However, I took it out yesterday to give it a second go with a variety of ammo to include an old box of Remington 55gr. Express Rifle someone gave me as they didn't have rifle any longer.
After checking it out at 25 yards, we went to 100 and my oldest cloverleaf three shots. Severely surprised, I asking him which ammo he used and it was the old Remington. Sure enough, the plain jane Remington is what this rifle likes.
I don't think Remington makes that exact ammo anymore, but they still sell something similar under a different name....can't wait to hit the range again.....
Jerry