I am using PowerBelt 245 gr hollow points and am very pleased. I am getting tight groups at all ranges and they are much easier to load than sabots. You will notice some resistance after a few shots near where the bullet seats but nothing like I have had in the past with sabots. I am also using 100gr charge of.777 pellets which is much easier to clean than Pyrodex or black powder. It does blow a major smoke cloud though and it takes a couple of seconds to see your target.