I am wanting to get into LR shooting. I am starting at Zero as far as long range goes and I would like to only buy equipment once. I have read many of the threads and decided that a USO is the way to go. I am planning on shooting 308 for now with a possible upgrade to 338 or 6mm in the future. I would like to shoot LR tactical competitions. My question is if I should get the 5-25 or the 3.2-17? Are there any big downsides to the higher mag other than a few ounces and hundreds of dollars? I am thinking if I do go 338 the higher mag will be needed and if not no harm done.