The $100 challenge.....

I've had a bit more of a play with the gun and proven to myself that the mounting position of the red dot scope I'm using (rear iron sight mount vs dovetail) is not the reason for the scatter I'm still getting.

I did get a very tight group of 3 shots by pressing the pellets in 6mm or so but the next two were well off.  I thought I'd cracked it but apparently not.

So next I pushed a pellet the full length of the bore with a piece of aluminium welding wire to see if I could feel any tight spots and found that the it's choked - which I wasn't expecting.  Otherwise, the pellet slides freely after the initial set.

My question is, will removing the choke help improve accuracy at all, and if so, how do I go about it?