Well I ended up with the 4-12x40 trophy, very nice scope. I had the mainspring replaced in my supertune and am I safe to assume that the spring needs plenty of rounds fired to stabilize in tension? My groups at 10 meters were about an inch then after 50 or so rounds began to tighten up dramatically to about 1/4 to 3/8 inch. Is this normal and if so how many shots should I expect to have the spring settle. I will post target pics when I can. Thanks Big 6 for all your suggestions.