Folks here is an on line calculator that might help you in watering.
Play with the pipe size and see what a difference it makes.
I did a test at my house a while back, I have 3/4 inch line going to the house that is over 100 feet.
I had 10 GPM at the faucet at 50 PIS.
At the meter I had 23 GPM.
If you ever have a house built or have a long run to the house dont ever let them talk you into anything less than 1 inch pipe regardless of the small meter.
If it is really long like 1000 feet go 1 1/2 or more.
http://www.google.com/url?sa=t&rct=j...,d.b2w&cad=rja