Good optics are required to see holes in the target at distance. Good optics are available for very reasonable costs. I'm still using an about 60 year old spotting scope, Bausch & Lomb, 15X to 60X. I saw one on Craigslist (Seattle, $60) a week or so ago. We did a very unscientific comparison of my scope and a new, expensive Pentax ( $7-800? range) spotting scope a few years ago. We couldn't see any differences. The B & L was made in Japan, the labor cost savings were put into quality lenses and parts. I see these scopes on ebay for very decent prices ($200-). They are big for packing on a horse or on a sheep hunt, but just fine for the range or prairie dogs. Mine has seen a lot of game, prairie dogs, sage rats and target holes since the mid 1960s.