I have a martin birdhouse that requires maintenance in the form of sparrow removal. The distance is 50 yards. Our crossman 760's don't get it done with consistancy. Will the older type of benjamin pump 22 air gun have suitable (1 1/2 inch) accuracy and enough oomph to nock down sparrows at that distance? I don't want to spend much money and I prefer a gun that is repairable. I assume a 22 is better than a 177 for the job. What say ye, the men of the wind pipes!