I bought a new brand name scope a while back, expecting it to be a working good scope. The first time I used it was on a custom 270, The boresighting was almost spot on so sight in took less than 10 rounds and two 3 shot groups were very small. I took the rifle on a elk hunt in wyoming and the trouble started. during the sight in check the scope started two spotting meaning two groups around 2 inches apart. and it took 20 rounds to figure this out. I ended up hunting with another rifle also a custom mauser in 308. I send the scope back to the manufacturer, when it finally returns I put it on my 7MM Remington magnum. This time I run 40 rounds thru the rifle and around the 20th shot it all begins again. Exactly the same two grouping even to the angle and placement of the groups. They must have done nothing to the scope and this cost me 30 150 grain 270 shells loaded with partitions and 40 160 grain partitions out of my 7MM magnum. Should I send it back or throw it away? Should I waste a couple more boxes of shells on it? I should have ordered a Leupold in the first place. Funny thing I had a 3x9 Bushnell Banner so I put it on the 7MM RM and it has worked perfectly for more than 100 rounds.