I shoot a #1-B and I have NO difficulities with accuracy.
But, then I am a shooter and NOT a powder burner. From what I have heard of the complainers is that the 'barrel warps' after about the 10th or 15th round shot in rapid succession. I mean just as fast as they can work the action and shoot.
Yes, I 'burn' lots of powder but not in this fashion. Use a chrony, shot log, spotting scope and Lee Loader at each session at the range. When hunting, only 1 shot is needed. Why, then, shoot 15 rounds so fast thru a single fire weapon so as to create a 'barrel warp' (their word not mine)? If they wish to shoot so fast, why not get a BAR?
My #1-B is chambered .257 Roberts and I shoot it LOTS out to 200 yds. All my rounds are hand loads and I have achieved an under 1" MOA. My weapon was never 'all over' the target, but I was after a tight group for hunting. You might be surprised just how much a slight variation in a load will effect the bullet strike.
I believe you will enjoy the #1 IF you use it as a SINGLE SHOT weapon. At least, I enjoy mine and so do my grandchildren, I take they to the range, and hunting, with me. After all, someone has to shoot all these hand-loaded cartridges, so I can load more!!
Cuz