I would strongly urge caution on exptecting 150 to 200 yd shooting capabilities, unless one is going to spend a LOT of time shooting at those distances at the range. Also, at $2-3 every time you pull the trigger, getting proficient at those ranges could easily get into the hundreds or even thousands of dollars. I would consider these ranges equivalent to the typical rifle hunter attempting 300-400yd shots--yes, ballistically the energy is there to do the job, but this is getting to the realm of the expert shooter who has "done his time" on the range.
Although these are highly accurate guns, they are still slug guns and somewhat limited due to the BC of the projectiles, and the velocities. Wind drift is definitely a huge factor and may be measured in feet not inches under some conditions. Also, publically published ballistic information is often "fluffed" for marketing purposes, and the manufacturer's disclaimer of "your results may vary" always apply.
These are fine guns, and very capable to 100 or 125yds in the hands of someone who has a steady rest and a reasonable amount of range time under his belt. Longer shots than that should only be attempted by "experts" under "ideal" conditions.