Do some searches. I answered this question at least 2x in the last 3 weeks.
Summary is they are accurate, and it is generally considered that the current manufacturer is the best made of the bunch. Then next are the Monson guns and finally the worst is the Palmers.
They are extremely well made, solid, and being able switch barrels is great for cleaning and adjustment of the gun.
I love my 2x of them a new 722 (favorite 22) and my Monson 15-2.
Edited to add, look at the favorite 22 post down below and you will see some targets with my 722.