If you are very serious about a ram pump go to Rife Rams website, they have been making rams for a long time, we had one of theirs on our farm for 25 years and it pumped water to our barnyard water trough 500' from the spring 24-7, a 1" steel pipe flowing with cold spring water in the barn all of the time, the perfect place to get a drink on a hot summer day. A Rife ram costs more than $2000, plus the cost of setup.