If your shooting 1000y you need it. Remember if a scope has 60-70 total MOA, you divide by half and sometimes more just by the mounting system. This is just my 2 cent worth. The smaller the tube diameter the less travel you have as another poster mentioned. Large tube diameter usually give you more MOA adjustments at long distance, but not always.
Last edited by 378Canuck; 02/28/19. Reason: spelling
