Hello Fellow Riflemen, I'm building a new shooting range beside my house and wanted your opinions of the backstop that I intend to build. I am going to use two 10x8" by 10' Creaso bridge ties (bigger than railroad ties) and cut them up into 3'4" sections. There will be 2 rows, or about 20" thick. Am also considering having a 6" gap between the two rows to fill with dirt. I probably won't shoot anything above the .300 Win Mag. Will this backstop be sufficient?